The best defense against Mother Nature is Mother Nature. Introducing STEM Kills Ants, Roaches and Flies – a bug spray for home and outdoors made with botanical extracts that are safe for you, but deadly for bugs. STEM’s scientists decode the power of nature to optimize botanical extracts to effectively and safely protect your family, home and pets from pests (when used as directed). STEM bug spray is a roach, fly and ant killer safe for use around kids and pets (when used as directed). Formulated with botanical extracts, it has no added dye, fragrance, or harsh chemical odors. Our roach killer is made for indoor and outdoor use. This bug killer safe for use around kids and pets (when used as directed) was tested by entomologists.​ STEM helps protect your family. Rooted in Nature, Optimized by Science.