The BAYER advanced 24 hour Grub Control contains a chemical called DYLOX that is known to eliminate pesky insects and grubs within a maximum period of 24 hours. Use Dylox 6.2 Granular Insecticide ⦠David Smitley, Terry Davis and Erica Hotchkiss, Michigan State University, Department of Entomology - How Late Can I Put Down Grub Control? However, when applied in June or July they provide excellent protection against the next generation of grubs. A third concern is the rate at which the insecticide is applied. Be sure the problem is grubs. Jeffrey W. Dwyer, Director, MSU Extension, East Lansing, MI 48824. The two most common are carbaryl, which is Sevin and trichlorfon, which is Dylox. I received this email question about alternative grub control insecticides. These all look similar and feed on the tender roots of turf. DYLOX 420 SL Turf and Ornamental Insecticide is a soluble concentrate, which dissolves readily in water and is suitable for use in all power-operated ground sprayers. Chlorantraniliprole applied in April will not work on spring grubs that are already present when it is applied. This information is for educational purposes only. It is best to apply the nematodes when grubs are present and when the soil temperature is above 50 degrees Fahrenheit. At one garden center a clerk showed us two products, one containing only permethrin and one containing only bifenthrin, when we asked for products to control grubs. Before discussing alternative management strategies for grubs, it is important to understand that if grubs and turf damage are discovered in April, the only insecticides that will be effective in April are carbaryl (Sevin) and trichlorfon (Dylox). If you order or purchase a live nematode product for grubs, make sure you buy a Heterorhabditis nematode and not a Steinernema or another type of nematode. Always wear rubber gloves and rubber boots when applying insecticides to turfgrass. Our research has indicated that carbaryl has been a little more effective on European chafer grubs than trichlorfon. Easily apply with a Scotts broadcast, drop, handheld, or Wizz ⦠Michael WillsonWillson's Garden CenterPetoskey, MI 49770. Our results so far agree with the results of a test conducted a number of years ago in Kentucky by C.T. According to Cornell University, the milky spore organism, Paenibacillus popilliae, was the focus of a huge Japanese beetle biocontrol program 60 to 70 years ago, with over 100 tons of spore powder distributed throughout Pennsylvania, Ohio and surrounding states where Japanese beetle occurred at the time. Below is a short list of products now being sold for grub control as of May 22, 2020, in stores checked in the Mid-Michigan area. and D.A. Is the grub population here in northern Michigan likely to be other than from the Japanese beetle? Check the bag or bottle to determine what active ingredient the product contains. Have there been any studies done on its effectiveness? The outbreak phase where turf damage is common may last five to 10 years. If customers ask about the safety of standard neonicotinoid grub control products (imidacloprid, clothianidin and thiomethoxam) for honey bees and pollinators, you can tell them that if the lawn is mowed before the insecticide is applied that it will be safe for honey bees because no open flowers (flowering weeds) will be present when the lawn is treated. You can do this by following Michigan State University Extension’s recommendations of setting your lawn mower at the highest clipping height (3-4 inches); applying at least 2.5 pounds of actual N per 1,000 square feet of lawn per year using a slow-release fertilizer several times each year; watering during dry periods; and returning grass clippings and chopped leaves to the lawn instead of collecting and removing them. If you see a dead patch, use a shovel to dig up a few Frisbee-size samples of turf around the bare spot to a depth of 2 inches and look for 0.75-inch long, C-shaped white grubs. It contains only lambda-cyhalothrin or gamma-cyhalothrin. Unfortunately, there are not any biological control products that you can purchase at the garden center that will give the same level of control as the standard insecticide products. Water the lawn immediately after applying the insecticide. If applied too late, preventative products may not be effective as they work best on small grubs. ⦠The Bayer 24 Hour Grub Killer contains DYLOX⦠The 4-H Name and Emblem have special protections from Congress, protected by code 18 USC 707. mowing your yard with the mower on the highest setting. For more information, visit https://extension.msu.edu. May 22, 2020. In the last 10 years, the amount of European chafer damage to home lawns in ⦠I will put grubex down next spring as a preventer, I just needed something to kill the grubs now. Applying them now will allow some of the chemical to leach through the turf or break down to the point that not enough insecticide will be there in July to control grubs. Also, irrigate your lawn immediately before and after applying the nematodes so as many as possible will make it into the soil. There are different recommended timings for application depending on the active ingredient. Before discussing alternative management strategies for grubs, it is important to understand that if grubs and turf damage are discovered in April, the only insecticides that will be effective in April are carbaryl (Sevin) and trichlorfon (Dylox). Jeffrey W. Dwyer, Director, MSU Extension, East Lansing, MI 48824. The second major concern is to make sure the insecticide is thoroughly watered into the ground with at least a half-inch of irrigation or rain immediately after the chemical is applied. Our research indicates they will kill 20-80% of grubs when applied in September or 20-55% when applied in late October. Annual bluegrass weevils (larvae and adult), armyworms, chinch bugs, cutworms, sod webworms, white grubs. Examples of products that contain these chemicals include Sevin® and Dylox®. Proper fertilization is important to prevent and allow the lawn to recover from grub damage. This article was published by Michigan State University Extension. Two different types of chemicals are used at different times of the year for different targets, preventives and curatives. These active ingredients can be toxic to bees if the bees visit flowers that were recently sprayed. Healthy turf with a few grubs may not need an insecticide. Chlorantraniliprole can be applied as early as April and up to mid-July. Insecticides used for grubs can be separated into two groups based on how they work: preventive chemicals and curative chemicals. Preventive products are the most effective. Finally, avoid spray drift or granular spreader drift to flower beds when applying thiamethoxam, imidacloprid, clothianidin or any insecticide for grubs other than chlorantraniliprole. Dylox 6.2 Granular Insecticide Pests Controlled. Wisconsin, Minnesota and Iowa have now joined the club of Midwest states with lots of Japanese beetles, and they have been found in isolated locations as far west as Colorado. It was also reported in Wisconsin in 2013. A single application of Scotts GrubEx stops A single application of Scotts GrubEx stops grubs all season long. They will not work on grubs found in the lawn from the middle of October through the middle of May. Preventive controls include the neonicotinoids and chlorantraniliprole, but the timing for each approach is very different.The label directions for most neonicotinoids (products containing chlothianidin, imidacloprid, or thiamethoxam) indicate they should be applied \"when females are laying eggs\". Issued in furtherance of MSU Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. Both Bayer Advanced Grub Control and Bayer Advanced Grub Killer Plus are marketed to those battling with turf-destroying white grubs. A garden center owner asks about alternatives to standard grub control insecticides. Do not apply any curative compounds in the spring after May 15 as grubs stop feeding in late May as they prepare to pupate. Dylox ⦠Japanese beetles and European chafers lay most of their eggs in July, but Japanese beetles continue laying eggs into August. There are two chemicals, carbaryl and trichlorfon, that are considered curative treatments. Check for the active ingredient in a grub product. This information is for educational purposes only. After irrigation or rainfall, grub control is established in as little as 24 hours and penetrates thatch up to ½ inch thick. 88: 846-854. Dave Smitley, Michigan State University Extension, Department of Entomology - It rescues and protects lawns and turf from grubs and certain other insects that feed on them. As a professional lawn care service we get a lot of questions about lawn maintenance. April 1, 2014. Scotts GrubEx vs Bayer Grub Killer Plus. If there is nothing flowering in the lawn, there is nothing in it that would attract bees. This time of year (late summer and fall), only curative products can be used to effectively control grub populations. Carefully check the label for ingredients. These are most likely the larvae of European chafers if they are found in lawns without an irrigation system. Lawn sprinklers can be used if you do not have an irrigation system. & grubGONE! The best alternative strategy to avoid grub damage is to improve your turf management practices to establish a dense root system in your lawn. Weeds that flower again after mowing are much safer than weed flowers that were sprayed directly with insecticide, but some of the insecticide is absorbed by the roots and will move into the pollen and nectar. Use Scotts GrubEx annually ⦠Issued in furtherance of MSU Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. European chafer grubs may be found in all locations in Michigan’s Lower Peninsula and in much of the Upper Peninsula. Scotts GrubEx Grub Killer and Preventer . They spend the winter as large grubs (0.75 inches long) some 2-6 inches below the soil surface. ... GrubEx or Dylox⦠The milky spore pathogen may not be as virulent to Japanese grubs now as it was in the 1940s during the. The 4-H Name and Emblem have special protections from Congress, protected by code 18 USC 707. setting your lawn mower at the highest clipping height, returning grass clippings and chopped leaves to the lawn. The grubs feed from the beginning of August until late October. *What is 0.5 inches of irrigation? It kills 25% more grub types vs. original GrubEx. Do not use products containing ONLY lambda-cyhalothrin, gamma-cyhalothrin, bifenthrin, deltamethrin, cyfluthrin or permethrin for grub control. Hereâs a review of products and best practices. You can do this by putting a pinch of nematodes in a glass of water at room temperature for 10 minutes and check to see if they are wiggling. However, if the grub population is high or if there is a history of damage in an area, it may be necessary to consider using an insecticide for grub control. We have had questions from our customers at our garden center here in Petoskey about the Milky Spore granular product by St. Gabriel Laboratories and I am having a hard time getting the facts. vs. A lawn should be mowed at 3 to 4 inches in height and properly fertilized for maximum root growth. Check out the MSU Sports & Commercial Turf Management Certificate Program! To have a digest of information delivered straight to your email inbox, visit https://extension.msu.edu/newsletters. This article was published by Michigan State University Extension. I thought others may have the same question. In the last 10 years, the amount of European chafer damage to home lawns in southern Michigan has steadily decreased to the point where it is unusual now to find populations high enough to damage turf. However, even trichlorfon should not be evaluated for at least five days after application (assuming it rains or irrigation was applied), and carbaryl may need three to four weeks to be effective. Also, in the last two years several products have become available in an attach-to-hose bottle and are automatically mixed with water when applied. It is important to realize that healthy turf, supported by frequent rain or irrigation, can support a grub population of five or more grubs per square foot with no visible turf damage. In Canada, it is a problem in Ontario and Vancouver, so Washington State is on the lookout for it also. Some of these products come in a granular formulation that is applied with a fertilizer spreader or some products are designed to be mixed with water and sprayed. 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