An insecticidal plant spray for tomatoes and vegetables! Doktor Doom Spider Mite Knockout contains a high concentration of the naturally-occurring insecticide pyrethrin (0.20% formula). Effective indoors or out against aphids, spider mites, whiteflies, leafhoppers, Japanese beetles and much more. Unique nozzle sprays in all directions — even upside down for hard to reach areas. Safe to apply on food crops up to one day before harvest. Does NOT contain PBO.