Garden pests die within a few days of eating leaves sprayed with Safer Caterpillar Killer. Use it on trees, shrubs, and veggies to control bagworms, webworms, tent caterpillars, gypsy moth larvae, tomato hornworms and other leaf-eating caterpillars without harming beneficial creatures such as ladybugs or earthworms. Mix one to two teaspoons per gallon of water. Active ingredient is Bacillus thuringiensis var Kurstald. Specially formulated combination of insecticidal soap and aromatics. Kills Caterpillars (leaf-feeding).