Safer’s Insecticidal Soap for Houseplants kills insects on contact. Use it to control aphids, mealybugs, spider mites, whitefly, soft brown scale, psyllids, rose or pear slugs and earwigs on houseplants. Potassium salts of fatty acids (insecticidal soap) works to dry out an insects waxy out shell, causing them to dehydrate and die. Specifications: • Active Ingredient: Potassium salts of fatty acids 2% • Kills aphids, mealybugs, spider mites, whitefly, soft brown scale, psyllids, rose or pear slugs • For use on houseplants • Works to dry out an insects waxy outer shell