Greg from Mesa, Az writes
Ferti-lome Tree and Shrub Systemic Insect Drench is not labeled for grubs. Since grubs live underground they must be treated with a product that will target them where they live. We do have several products that are specifically labeled for grub worms on our website: Grub Worm Control. We also recommend that you contact your local cooperative extension office and inquire about the best time to start treatments for grubs in your region.
Answer last updated on: 10/15/2019