![]() Since the soils tend to be very wet this time of year and since the grubs will not be laying their eggs until summer, I asked our researchers when they apply GrubEx to their lawns. One trichlorfon product has “24 Hour Grub Control” in its name and would seem to indicate that it will kill grubs in 24 hours. It will take 10-14 days for the grubs to begin dying after the insecticide is applied. Keeping this in view, how long does Scotts GrubEx take to work?īoth compounds work equally well on Japanese beetle grubs. Not for sale, use, or distribution in Nassau, Suffolk, Kings or Queens counties of New York.Ĭan I apply GrubEx and fertilizer at the same time? Using GrubEx with Fertilizer According to the Scotts website, only straight fertilizer, with no other ingredients such as pre-emergent herbicides or other pesticides, may be applied at the same time as GrubEx. Water in thoroughly (approximately 1 inch) to activate. After application, water your lawn to a depth of 1/2 inch, which is typically a 20- to 30-minute watering. Use the SPREADER SETTINGS FOR THIS PRODUCT table below as a guide in. Using a drop or rotary spreader helps broadcast the granular pesticide evenly. Standard for agricultural pesticides (40 CFR part 170). The Scotts Company recommends treating each 1,000 square feet of lawn with 2.87 pounds of GrubEx once yearly. ![]()
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