.008 Bug Assassin can be used indoors and out to control soft bodied insect pests like spider mites, whiteflies, and aphids. Safe for people and pets when used according to label instructions. Works 2 ways to control insect infestation. First, it degrades the wax coating on target insects. The stripped wax fills pores, eventually suffocating the nasty intruder. Second, Eugenol and the other plant derived essential oils in the product are known to block obtopamine which is an insect neuro-transmitter, causing its death.