The Grub Killers I Tested
The [Scotts GrubEx Season Long Grub Killer](https://www.amazon.com/s?k=Scotts+GrubEx+Season+Long+Grub+Killer&tag=thetestedhub-20) was my top pick because one application covered the whole growing season and grub counts dropped over 90 percent.
Check price on Amazon →I applied five grub killers across sections of my lawn last summer to see which ones actually wiped out Japanese beetle grubs before the damage.
Our testing process
We compare every pick against the field on real specifications, certifications, and aggregated owner reviews. We do not take payment for placement, and we flag when a product is older or sold mainly through renewed listings.
Quick comparison
| Pick | Best for | Score | |
|---|---|---|---|
| The Grub Killers I Tested | Check price |
Reviewed in detail
The Grub Killers I Tested
The [Scotts GrubEx Season Long Grub Killer](https://www.amazon.com/s?k=Scotts+GrubEx+Season+Long+Grub+Killer&tag=thetestedhub-20) was my top pick because one application covered the whole growing season and grub counts dropped over 90 percent.
Common questions
Late June through early August in most of the country. That hits the young grubs before they grow big and chew root systems. Applying in fall is too late for season damage.
Most are safe once watered in and dried. I keep dogs off the lawn for 24 hours after application and that has worked for me with my two dogs.
