How Should GrubEx Be Applied? It’s best to use a rotary or drop spreader to apply the pesticide evenly over the surface of your yard at a rate of 2.87 pounds per 1000 square feet. Follow up by giving your lawn a good watering to activate the product. Water for about half an hour or to a depth of about half an inch.

When should GrubEx be applied?

Apply during spring or early summer to kill grubs as they develop. Using Scotts® GrubEx®1 Season Long Grub Killer annually can also help control Japanese beetle and Armyworm infestations. Easily apply with a Scotts® broadcast, drop, handheld, or Wizz® spreader and stop grubs before they damage your lawn.

Can you apply too much GrubEx?

Applying too much can hurt the environment and using too little may not control the grubs in your lawn. Although Dylox claims it kills grubs within one to three days if applied properly, you may still notice grub activity within that time or shortly after.