DiPel DF is a dust-free dry flowable insecticide that kills caterpillars and borers using the bacteria Bacillus thuringiensis v. kurstaki or Btk. OMRI Listed, it is labelled to control most Lepidopteran (caterpillar) insects on fruits, citrus, tropical fruits, vegetables, grains, bulbs, flowers, herbs, turf, ornamental trees and shrubs.