STEM Kills Outdoor Wasps Hornets Yellow Jackets Killer Spray Protect your family with STEM Kills Wasps Hornets and Yellow Jackets. Our insecticide spray for outdoor use is made with botanical extracts that are deadly for bugs. Specifically lemongrass and geraniol essential oils in this bug spray attack the nervous sySTEM of these pests. STEM plant-based active ingredient bug spray kills stinging insects. Our non-toxic wasp spray is made for outdoor use and is safe for use around people and pets when used as directed. This flying insect killer was tested by entomologists and has no harsh chemical odors fragrance or added dye.
