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How to Stop Grubs Before They Kill Your Lawn

May 13, 2012

Grubs are sneaky. There’s no way to tell when they invade your lawn, because they do their dirty work underground where you can’t see them.

Your lawn can look fine on top, while grubs are eating away at the roots, cutting off the supply of water and nutrients to your grass plants.

The visual warning of brown grass patches can be too late. Infested lawn areas often turn yellow and then brown after the damage is already done. In severe infestations, your sod can often be peeled back like a carpet. Unfortunately, the entire lawn may then have to be replaced.

Here is how the grub cycle works:

In early spring mature grubs awaken from hibernation and begin to work their way up from deep in the soil to just below the grass surface. In late spring, these grubs change into a pupae stage before turning into beetles that later feed on roses and other shrubs and trees in your landscape.

In summer, beetles burrow into the lawn and lay eggs that will hatch into grubs.

In late summer and early fall, newly hatched grubs feed heavily on your grass roots before hibernating for winter. It is during this time that young grubs do the most lawn damage as they gorge themselves prior to hibernation.

The good news is that you can kill grubs before they destroy your lawn. You can easily protect your lawn investment with a single application of Scotts GrubEx, which provides season-long protection.

The ideal application timing is May or June prior to the time when adult beetles lay eggs in your lawn. The GrubEx protection kills newly hatched grubs before they get large enough to damage your lawn.

GrubEx doesn’t harm earthworms, which are so beneficial to your soil. Even though you rid your lawn of grubs, you may still get the occasional mole in your lawn feasting on any earthworms living in your soil.

One last tip… Be sure to water your lawn after spreading GrubEx (click here for more GrubEx info).

Grubs eat grass roots resulting in brown, dead lawn patches in fall and early spring

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  1. David permalink

    I have had the occasional problem with grubs but an application of Grubex seems to work well. My problem is ants. I have had ant problems in my lawn since I bought this house many years ago. I have tried Scotts Turf Builder with Insect Control and many other insect killers with no luck. I think the ants colony goes down so far that the queen is not killed and they keep coming back. My lawn feels spongy in some areas due to the many ant hills. Is there anything that can be done to get rid of them once and for all?

    • Hi David
      Try spreading Ortho Bug B Gon MAX granules on your lawn. This product is especially good at killing ants. It also takes care of fleas, ticks and other lawn damanging insects (but not grubs).

    • K. F. Barnes permalink

      This is not a commercial product, but works very well on ants. Mix one teaspoon pure borax in one-quarter cup of mint-apple jelly. After mixing, heat in almost boiling water, mix again. Place mixture on pieces of rigid material (example: small tile). Place tile in lawn where ants are seen. Ants will find the mixture, eat the borax, return to the colony, they die, other ants eat them (including the queen) and they die. Takes about a week to completely kill a colony. And the ants find the colony for you !

  2. Frankie Henderson permalink

    Can you apply different applications of pests and weed controls at the same time.If not, can you give the timetables for applications.

    • Hi Frankie
      Some products can be applied together such as GrubEx and Ortho Bug B Gon (because they are both watered after application). Weed Controls are recommended to be applied when rain is not expected (times vary by product), so it would not be good to apply a product that should be watered after application. Some products recommend waiting a week between applications. All of this info is on the packages. If you want to receive specific recommendations for your type of lawn and your area, go to this link to sign up for free email reminders of what to apply and when:

  3. Natalie permalink

    I have applied nemotodes and Scott’s Bug Be Gone, but most of my lawn is very dry and brown/yellow. At this point, is it too late to salvage my lawn?

    • Hi Natalie
      When lawns go dormant because of a lack of rain, they can stay in the brown state for up to 4 to 8 weeks and bounce back when the grass gets at least an inch of rain. Some grasses are better at bouncing back than others. One thing that will cause them not to respond to moisture is if there was insect damage. If you were able to water some after spreading your Bug B Gon, you should be protected. If you need more of an answer, let me know where you are located so I can understand what kind of lawn you have and what lawn problems you have in your area.

  4. Geraldine Jones permalink

    Can I treat my lawn for grub prevention now in August? The reason I need to know is that my neighbor has grubs and I don’t want them!!

  5. Liz permalink

    We just found that we have grubs. The lawn looks OK but is not as great as it was earlier in the year. Can we treat as it’s almost October? We live in north Florida and don’t expect it to get cold for several more months.



    • Hi Liz
      Our GrubEx product needs to be applied before grub eggs are laid in late summer. Your young grubs should be controlled now if you have more than several per square foot. Since we do not have a product that I can recommend for active grubs, I suggest you check with your local garden center and ask for a grub control that will kill them now. Sorry we could not be more of a help with your problem.

  6. chris permalink

    i noticed in late October that I had grubs. A few people i talked to at the local box stores said it was to late to lay grub ex. My lawn i pretty bad and peeling back in a few spots. When is the earliest time i can lay it this year or is it to late and i need to reseed?

    • Hi Chris
      GrubEx works best when you put it down prior to grubs laying eggs… which means your April to June application protects you for grubs hatching out in late summer and early fall. So now the most important thing to understand is grubs do not feed on grass roots much in spring prior to turning into beetles. This means your grass could root (much like new sod) if it has good contact with your soil. About the time of your first mowing you might feed with Starter Lawn Food to encourage new roots. If your grass is too far gone to root, then you will need to seed this spring. Let me know if you need anymore info.

  7. Fred Reynolds permalink

    I had trouble with grubs last year. It’s early April in Chicago. Is it too early in the year to use a GrubEx type of material?

  8. Rob permalink

    Since GrubEx appears to kill only hatched grubs, why is it important to put it down before the eggs are even laid? Since the product works for up to four months, I’m worried that if I put it down in May that it’s effectiveness will end by September, i.e. late summer/early fall when the grubs are hatching.
    Also, when Scotts refers to applying a product during a certain season (say Spring) does this mean meteorlogical Spring (March 1st through May), astronomical Spring (March 20th through June 21st), or ecological Spring (using biological signposts e.g. the forsynthia bush begins to flower)?

    • Hi Rob
      A May application of GrubEx allows the time to get the most active ingredient absorbed into your grass plant to provide the protection from and killing of young feeding grubs in late summer. This timing also helps with Billbugs, Sodwebworms and other insects. My thoughts on your second question about the seasons are more in line with the biological signposts.

  9. Hello, I just discovered grubs in my planter beds. Does this product kill all stages of the weevil or just the larvae stage? Also, if they are in my planter beds, is it safe to assume they are in my lawn soil as well? Is there any harm in applying it everywhere to get rid of them?

    • Hi Courtney
      You are looking at grubs just prior to going into the pupae stage (when they do not feed on roots). The next stage is an adult beetle. (This is like a caterpillar turning into a butterfly.) This means that at this stage you generally do not worry about trying to kill them. Fishermen love this stage because they are great at the end of a hook. Now to your question, GrubEx is best applied prior to eggs being laid and then it does a great job of killing young grubs. So, an application next month takes care of the grubs that hatch from eggs in mid summer. Hope this helps answer your questions.

      • Thank you! So there is no way to kill them now before they become beetles? Aren’t they harder to kill once they are beetles because they can fly? Thank you!

      • Hi Courtney Ortho does not make a product to kill mature grubs just before they go into the pupae stage. You may be able to get a product at your local garden center that claims to this, however most folks ignore them at this stage. Adult beetles, like Japanese Beetles, can be killed with a variety of products. The best defense is to treat your lawn with GrubEx in May to stop the next generation.

  10. Ok Ashton, thank you so very much! They creep me out! 🙂 I will be glad to get rid of them in May!

  11. Where do you buy Scotts Grub Ex

    • Hi Sharon
      GrubEx is commonly available at most Scotts retailers. Check with the Scotts Help Center: 800-543-TURF to find a retailer near you.

  12. sean permalink

    Is it ok if I have already spread new grass seed to affected areas while applying the Grub-Ex to the rest of the lawn?

  13. Helen permalink

    Hello all ,
    i live in ontario , just outside of toronto , we don’t get grub ex up here but we do have nematodes , i noticed the grubs and sprayed last week , will this be ok for my lawn ? and as of yesterday i still have grubs , my lawn looks like hell and i did put grass seed down , does anyone have any suggestions

    Thanks Helen

    • Hi Helen
      Any grubs you are seeing now will soon go into a pupae stage to turn into a beetle. They do not feed during this pupae stage (this is much like the cocoon stage that a worm goes thru to become a moth or a butterfly). I do not have a suggestion for you to prevent the next generation of grubs as we do not have GrubEx registered to sell in Canada. If you were in the states, you could put down GrubEx this month to prevent the next round of grubs in late summer/fall. You can try the nematode treatment for grubs, however I do not have any experience with it… Sorry.

  14. Josee Leger permalink


    I’m also from Ontario where we used to use Merit for grub control. It has since been banned. Quebec still allows the use of Merit but only by professional lawn care companies.

    Now, our ONLY option is the nematodes but I have had several applications and unfortunately the skunks, raccoons and crows love the juicy little guys dead OR alive! My lawn is a complete write-off 😦

    I started looking at white clover as a grass alternative but the flowers attract bees and a friend who owns a lawn and pond care company suggested that grass is best.

    And this is why I love winter! LOL 🙂

    Josee Leger in Ottawa

    • Hi Josee
      I wish I had some suggestions for you. I am not familiar with the best timing and approach to use nematodes to control grubs. Some turf professionals establish the Turf-type Tall Fescues with the thought that grubs are not as much of a problem as with other cool-season grasses. Just look on the bright side… there are many good things about living in Ontario! Good Luck!

  15. Kjands permalink

    I have a well in the area of the grub and ant problem. Is grub x poisonous?

    • Hi Kjands
      I don’t think GrubEx will take care of your ant problem. Ortho Bug B Gon MAX will kill ants (however not grubs). I do not have a well, however if I did, I would not hesitate using these two products on my lawn.

  16. Lisa permalink

    I have cats that I let out in the back yard. We have grubs & ants and plan on using Ortho and Scotts on the lawn. Are these products harmful to my pets?

  17. Susan permalink

    Hi, my dogs eat grass when their tummy is upset, will it harm them? I’m afraid to put anything down for fear of poisoning. Also, I live in dry hot climate, do I need to water deep when I apply? My grass was fantastic up until two summers ago, I noticed spongy dry yellow areas. I’m so frustrated.

    • Hi Susan
      Our cat also eats grass. Before I answer your question about your dog, I am not sure you have had a grub problem based on your description. Let me know the city, state where you live and any info you know about your grass type. Also, if you can tell me what you have put on your lawn so far this spring that would be a big help. GrubEx is ok to use if you have pets. Keep pets off the lawn while you are spreading. Water after application (around a quarter to half inch). Then when the lawn is dry your pets can return to the lawn.

  18. Terry permalink

    I live in Michigan. This year seems like much of the community I live in has experienced a population explosion of grubs. So many lawns look so terrible this year with the same brown patches as mine. I’ve never had any grubs before this year. It became apparent in late May – mid June that i noticed the patches and I dug around in them and found white grubs curled into a “C shape” with brown heads. They were about the size of a nickel or even larger.
    The “patches” I found were only in one area of my yard and I fear next year it will be worse. There were about 8 – 10 in that area that I found and got too grossed out to look for more!

    I am wondering what type of grub they are and what method best to cure this problem overall. I understand there is a cycle I need to break. It is now almost August and I need to know what I should use and break this cycle. I hear it depends on what type of grub they are. Can you lend me some advice on how to handle this?

    • Hi Terry
      The most common white grub in many areas of Michigan is from Japanese Beetles. GrubEx takes care of grubs from 11 different kinds of beetles. If you have not applied GrubEx yet this year, you still have time. Put it down ASAP and you will get protection from the grubs that will hatch in late summer and early fall. Water your lawn after spreading.

  19. Nicole Brereton permalink

    Hi I had the black beetle in my seeded lawn last year and have just poisoned the lawn as I am wanting to turf the lawn.I have taken up the dead lawn and it is now all just soil but have noticed some black beetle in the soil what should I do?Should I treat the soil with the GRUBEX?am I going to be able to turf?I live in Australia and the we are currently in spring and summer starts in November here?Any suggestions would be great?

  20. Holly permalink

    We just laid 3200 square feet of sod and noticed about 10-20 baby grubs in the sod. Is that enough to worry about? I do not want our money spent on sod completely destroyed before it even has a chance to root! We live in bakersfield, ca so we are extremely dry and water three times a day right now.

    • Holly permalink

      The baby grubs we saw are about 1/4 inch long.

      • Hi Holly
        I do not think you are finding enough grubs to be concerned about. Keep your sod watered until you can feel root resistance when you try to pull it up. Ask your sod installer if they fed it when they installed. If not, feed about a month from now with Scotts Turf Builder Lawn Food for New Grass. If they did feed when installed, feed a month from now with Scotts Turf Builder WinterGuard. You are living in an area that can grow many kinds of grasses, however I would suspect that you have Bermudagrass. If so, only one more feeding this year will likely be enough.

  21. Carmen permalink

    Help My grass was dying and sure enough I have Grubs so I went to home depot got grub x I borrowed a hand spreader and it went to fast so back yo home depot and got another one and my own spreader. well its been like 3 weeks and I was pulling some dead grass and yikes baby grubs Help!!! I am women and not good at this lawn stuff Please help (MI)

    • Hi Carmen
      GrubEx is best applied between April and August to prevent grubs from becoming a problem in fall and next spring. It knocks off the grubs as they hatch from the eggs in late summer so they do not destroy your lawn’s roots. I am sorry to say that an application this time of year will not do the job on grubs. We do not have a product to use this time of year on grubs that are already in your lawn. You can check with your garden center to see if they have a grub control that will work this time of year. It is generally sold as controlling grubs fast, however it does not provide longer lasting prevention.

  22. Deepa permalink

    I have these grubs eating my whole backyard . They just cAme a month ago. Anything I can do before my whole yard is destroyed. I am in tears

    • Hi Deepa
      I am very sorry to say that I do not have a recommendation from Scotts or Ortho to kill active grubs this time of year. Our best approach is to prevent grubs from getting to the stage you are experiencing by spreading some GrubEx anytime between April and August. There may be some product options that provide quick grub kill this time of year…. check with your local garden center. Sorry I could not provide a solution.

  23. Mike permalink

    Anyone needing a FAST ACTING for grub, should use BAYER 24 hour, if they missed the GRUB X and grubs are starting to eat,. If you put it down before a light rain ( 1/2 inch predicted) you will find LOTS of DEAD grubs after it. It kills them dead NOW.
    Be sure and use the GRUB X in May as told here, and you won’t need this info!

    I happened to catch grass turning one year in about August, and dug down a little with my fingers and found lots of grubs. They were dead in 24 hours as described, but I put it down right before a good 1/2 inch rain. Grass immediately started comong back.

    Now I just use Scotts in May and let them go away.

    (moderator- delete my last post!)

    • Hi Mike
      Thanks for your input. Grubs are a lot harder to kill in spring than in August as you experienced. In many cases they do not need to be killed in spring as they do very little feeding prior to going through the pupate stage to become beetles. Your advice to put down GrubEx in May is right on!

  24. Danielle permalink

    Hello, I live in Massachusettes and my neighbor who has a beautiful lawn has been overrun by grubs this year and has distroyed his lawn. I am now worried about them coming over to our yard. I have been reading your comments about the Grub Ex, do you think I lready have them? And I know the gGrub Ex is preventative but would help me now if I do have them? Thank you for your advice!

    • Hi Danielle
      Grubs are about to move into their non-feeding stage as they go through the process of becoming adult beetles. If you had a big infestation now, you would have seen the damage last fall and this spring. A healthy lawn with a robust root system from regular feeding can tolerate a few grubs per sq. ft. Your best approach is to put down GrubEx sometime in the next few weeks when a rain is forecasted so it gets watered in good and then you will be protected from the next generation of grubs that will hatch from eggs laid by beetles this summer.

  25. Arthrup J permalink

    I have been very happy with milky spore for organic grub control.

    • Hi Arthrup J
      Thanks for passing along your experience. Sounds like you are one of the lucky ones based on this report from Michigan State Extension Service this spring:
      I think one of the difficulties is that Milky Spore is only for Japanese Beetle grubs and not other white grubs. Japanese Beetle Grubs need to be present in the soil to ingest the milky spore bacteria and then die from it to inoculate the soil and this takes several years. During that time nothing can be put down to kill grubs as that would mean the soil would not be inoculated. After all that, one could have one of the other kinds of white grub species wipe out their lawn even though the Milky Spore is present.

  26. Can i apply grub x in August?

    • Hi Al
      Yes, you can apply GrubEx now, however your control may not be as good as you would have received with an earlier application. However, if you have had grub problems in previous years, then you should still apply ASAP and give your lawn a good watering (around a half inch) after you spread.

  27. Sanjay permalink

    I have adult grub and how to kill them? Please also let us know where to buy this product in Poland Europe

    • Hi Sanjay
      Sorry I do not have a recommendation for you where you are located. In this country those kind of grub products contain info on the package that claims grub control in 24 hours. Lawns can tolerate a small population of grubs if the grass is actively growing, so if you are unable to locate a grub control product, feed your lawn to help improve the growth rate.

      • Deepa Kotak permalink

        We had grubs last year. This year again they are destroying our lawn to the pint of no return After that raccoon come and night and are tearing up the whole yard. We put grubex in middle of august but it has not helped. We wake up to wrapped up yard. Causing us too much stress

        Any help please.

        Thank you


        Sent from my iPad


      • Hi Deepa Kotak
        Sorry to hear about your grub problem. The GrubEx application window is spring to late summer, however it is best applied in May or June to provide enough time for the product to be absorbed into the grass plant to provide maximum protection. The late summer applications can help some, however a lower percent of grubs will be killed, especially if the granules did not get a good watering after spreading to help the ingredient be absorbed into the grass roots. Some other companies offer grub control products that can provide control this time of year. Look for one that claims “24 hour” kill. Again, sorry for your problem.

  28. Leslie Helvin permalink

    Totally relandscaped the backyard with planters and St Augustine back in June (we live in Long Beach, Ca). While weeding in the past month (Sept-early Oct) I’ve found some plants that never grew much since planting so I pulled them out and all of the non growing plants had big fat grubs in the soil. The soil also seemed to be very moist and compact not getting as much sun throughout the day as we thought. We also have brown spots in the grass. Not sure if they are related. Any advice to deal with grubs now? I’m hesitant to plant new plants until we control the grubs. Thanks.

    • Hi Leslie Helvin
      The “grubs” you are finding around your plants could be the larvae of the Black Vine Weevil. Here is some info to help you ID:
      Ortho Tree and Shrub Insect Control helps to kill these root eating grubs of the Black Vine Weevil. Here is info:
      Your St. Augustinegrass may have a different kind of grub problem however I do not have a product recommendation to kill mature grubs in your lawn. Scotts GrubEx prevents grubs from becoming a problem if applied in May or June. Check to see if this brown spot is the result of a sprinkler that is not overlapping properly by placing a few ice tea glasses on your lawn when your sprinklers are on to see if you are getting good coverage. There are several insect problems and lawn fungus problems that attack St. Augustine, however these tend to not be a big problem where you live. Feeding your lawn regularly will help keep it healthy. Hope this helps.

  29. Is GrubEx available in Canada and where might I buy it

  30. hi Ashton. Its May 5th Upstate NY and I have active grubs in back yard. So, should apply the 24hr. “Kill Now Grub EX ” and after a few weeks apply the preventer to address the rest of the summer?

    • Hi Steve
      Scotts does not make a 24 hour grub killer, however you can buy it from another company. The mature grubs you are seeing now are not doing a lot of feeding as they are getting ready to shift into the pupae stage prior to becoming beetles. So, I am not sure how much benefit you will get from going after them now with the quick kill. If there are a high number per square foot (like 10 or more) then you may be able to kill some of them off now. You are correct in your thinking of putting down GrubEX sometime this month or in Early June to take care of the next round of grubs that will show up in late summer.

  31. joe osbourn permalink

    we have noticed brown spots around our pool,.alsowe think there are moles under our pool.what do we need to get rid of please

    • Hi Joe Osbourn
      Moles could be eating earthworms or grubs that may be present in your lawn. If you previously treated with GrubEX then their food is likely earthworms. If you did not put down a grub prevention and you think the brown area are caused by grubs (try to peel back the grass to look in the root zone for grub activity) you will need to treat with a 24 hour grub control. Your garden center can recommend a product for this that is sold in your area. For your moles, here is a link to several products that are designed to kill moles: Feeding your lawn can also help your grass recover from grubs if you only find several per square foot when you peel back the grass.

  32. Suzanne Molock permalink

    David- we have a home in Charleston SC and have battled grubs before. We were told they prefer St Augustine grass so we resodded with centipede. Four weeks ago our lawn looked fine. We were out of town and our neighbors noticed our lawn starting to yellow two weeks ago. We returned this past week (after the torrential rains in the area) and it is totally dead. Our lawn care guy says it is grubs but they do not eat our neighbors grass at all. Assuming he is correct, it appears we have a severe infestation and assume we will have to resod (again). What should we do to kill the grubs and prevent them from infesting our new sod? How long should be wait to resod? Thanks we are very frustrated!

    • Hi Suzanne Molock
      I would suspect that if grubs killed your lawn you would have been able to peel back the grass and find them in your soil. If you recently sodded with Centipede, did the grass have time to form new roots before you were away? (In other words, were you able to pull the sod with your hands and it was well attached to the soil?). If you sodded some time ago and the sod was well established, here are a few things about Centipede: This grass is not as shade tolerant as St. Augustine. Centipede does not like too much feeding. Two or three times a year is enough. Centipede is sensitive to some lawn weed killers. If you actually found grubs and you want to kill them now, Ortho and Scotts does not have a killer for mature grubs. Scotts GrubEX is a product you put down before grubs start to show up in late summer to prevent them from becoming a problem. There are products in your local garden center that are designed to kill grubs “in 24 hours”, however these products do not do a good job of preventing new grubs.

  33. Jay permalink

    This is late october in ohio. We noticed our grass has yellowed and died. Went out to yard was able to pull up grass easily and found a grub. We will have to reseed because a large area is affected. However what do we do about the grubs? When should we put down grub x? Do we wait until spring to reseed and apply grubx

    • Hi Jay
      Sorry to hear about your grub problem. GrubEX helps to prevent grubs from becoming a problem when it is applied once sometime between May and mid August. An application now would not kill any existing grubs. Your garden center likely carries a 24 hour grub control that does not prevent grubs, however can kill young adult grubs. If your lawn is not completely dead, you could go after them now with that product. You will probably need to wait till spring to seed as it is late now to do a fall seeding in your area. You should mark your calendar for a GrubEX application next May.

  34. Derick permalink


    Is there any way that you could possibly identify this grub that I found in my yard?

    • Hi Derick
      Entomologist ID the various kinds of White Grubs by looking at the pattern on the rear of the grub. Here is a site that shows how they do it.
      The good news is that GrubEX kills 11 different types of White Grubs that will hatch from eggs in late summer when you apply during May or June prior to the eggs being laid in your grass by adult beetles.
      Hope this helps.

  35. David Hill permalink

    Can I apply Scott’s weed and feed and grub ex at the same time? Would it damage my lawn if I applied them both one after the other?

    • Hi David Hill
      It is best to allow a week between applications of GrubEX and Scotts Turf Builder Weed & Feed. For most areas of the country the best timing for these two products is May. Let me know where you are located and I can confirm timing for you.

  36. Jason permalink

    Hello Ashton,

    I live in Metro-Detroit, Michigan and I purchased a home last fall. The previous homeowners did not take much care in their lawn, and I am really looking to spruce it up. I made my trip to the store for fertilizers, spreaders, weed killers, etc. While I was there, I ran into a gentleman who worked for Scott’s who was stocking shelves with products. We began chatting, and he told me that he recommended Bug B Gone right now in the early spring, with another application in the summer — followed by GrubEx in the fall (October or so).

    Can I use both products in this fashion, and most importantly — will it work?

    Also, I already have crabgrass and dandelions (it reached 80 somehow yesterday). So, I think it is too late for Weed & Feed, plus I planned on reseeding and fertilizing.

    All in all, what would be the best way for me to tackle this? The lawn isn’t in terrible shape, but it isn’t the best on my block, either. Also, should I aerate now, or wait until the fall?

    Thank you very much, and I am very glad I ran across this blog! As a new homeowner, I am learning every day!


    • Hi Jason
      You will need to decide if it is more important to kill your weeds or to seed this spring since weed killers typically damage new/young grass plants. If you are seeing around 75% good grass when you look down on your lawn, I would go the route of feeding it to build it up while killing weeds. Then in early fall you can seed if you need to. Or if you just have a few bare spots to seed with Scotts EZ Seed patching blend this spring, you can avoid those areas with your weed controls. For your feeding and weeding, I would still put down Turf Builder with Halts Crabgrass Preventer ASAP as it is still time to prevent most of the crabgrass problem you will have in the Detroit area this year. Then in a few weeks you can spray your weeds with Ortho Weed B Gon MAX plus Crabgrass Killer. The end of May you can feed your lawn Turf Builder for your second feeding this spring. Regarding the insects/grubs: Put down GrubEX in late May to prevent the next round of grubs that will show up in late summer(Detroit is a big grub problem area). This control will take care of many of the other lawn damaging insects. (If you have pets, the Ortho Bug B Gon MAX would take care of fleas, ticks, ants, etc.) I would wait to aerate in fall if your thatch layer is a half inch or greater. Plan on feeding twice this fall. Good luck with your new home and new lawn.

  37. Sally permalink

    I have a huge ant and grub infestation! Today is June 1 in northern NH and I’ve just applied Spectracide ant killer and watered. When can I spread the grub killer and when can I spread the weed and feed? Also, I need to patch and seed the dead areas where the skunks and possum dug up the lawn. Should I save seeding for last?

    • Hi Sally
      There is no waiting period to put down GrubEX after your ant treatment. Water after application. This treatment will help prevent the next round of grubs that will show up toward the end of summer. You can put down Turf Builder Weed & Feed a week later. Be sure to apply to moist foliage on a day when rain is not expected. If you only have a few spots to seed, you will need to skip those areas when you put down Weed & Feed. Scotts EZ Seed will work nicely for those bare spots. If you have larger areas to seed, you may want to wait till fall to seed, or you should wait to fall to put down weed control. That is because the timing for weed control and seeding is this: you can seed a month after putting down weed & feed OR you can put down weed & feed after new grass seed has grown enough to be mowed 4 times. This is why I am suggesting that you can do one or the other now and follow up in late summer/early fall with the other. Hope I have not confused you with too many options.

  38. I guess I have grubs and get grubs every year. About two weeks ago I use a 24 grub kill on my lawn. And then two days ago I used scotts grub x. Today I saw a couple of grubs on top of my lawn. I picked them out and kilked them but I can tell I have more. What do I do now. Do I put another application down?

    • Hi Donna Novarro
      My guess is that you have reduced the population and that any grubs you see have stopped or slowed their feeding. Your lawn can tolerate a low level grub population. When you start to see 5 or more grubs per square foot (when you peel back the grass like a carpet) then there are enough to cause major damage. Remember to put down GrubEX next May or June to protect your lawn from next year’s grub population.

  39. Anne Calhoun permalink

    My 3 month old puppy got ahold of a grub here and there aftet a spectracide application. The grubs were coming up out of the ground. I was following behind her so as to follow her nose. Got 99% of the grubs she sniffed out. But, here and there, she’d uncover a large grouping of them. Then she’d grab one and run and swallow it before I could get it from her
    She has been fine since. But I’m worried that at some point the grubs she ate will sicken her.

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