How Do You Get Rid Of Bag Worms On Trees? An insecticide with malathion, diazinon, or carbaryl (such as Ortho Tree & Shrub Insect Killer, available on Amazon) can rid you of a bagworm problem if applied to bushes and trees when the worms are still young larvae. How do you get rid of bagworms
What Is The Best Insecticide For Killing Bagworms? Sprays such as Bacillus thuringiensis, spinosad and any of the pyrethroid insecticides are effective on bagworms, especially early in the season. Late season infestations, when bagworm caterpillars are larger and more difficult to kill, are best treated with pyrethroid sprays. Does the insecticide Sevin kill bagworms? Answer: