Insecticidal soap is a safe and environmentally friendly pesticide that’s used to control many soft-bodied insects and pests, such as aphids, spider mites, whiteflies, and mealybugs, on plants. Made from potassium fatty acids, insecticidal soap works by dissolving the outer layer of the insect’s exoskeleton, which dehydrates and kills the pest without using harsh chemicals.
Synonyms:
Horticultural Soap, Insect Soap