Meet STEM. Our scientists decode the power of nature, scientifically optimizing it into effective flying bug fighting forms. STEM Wasp, Hornet & Yellow Jacket killer is an entomologist tested bug killer for outdoor use made with botanical extracts that are deadly for wasps, hornets, and yellow jackets.

STEM plant-based active ingredient bug spray kills hornets, wasps, and yellow jackets and has no added dye, fragrance, or harsh chemical odors. Our non-toxic wasp killer is safe for use around people and pets when used as directed.

Other Ingredients: White Mineral Oil, Isopropyl Myristate, (+)-ethyl Lactate, Carbon Dioxide 98.43%, Total 100.00%

DIRECTIONS FOR KILLING INDIVIDUAL OUTDOOR WASPS, HORNETS, and YELLOW JACKETS, or OPEN-FACED HIVES- READ ENTIRE LABEL.- USE ONLY IN ACCORDANCE WITH LABEL INSTRUCTIONS- SHAKE WELL BEFORE USING- Twist and snap off the tab on the front of nozzle before spraying. For outdoor use only; avoid spraying towards people, pets, or plants. -For treating Wasps, Hornets, and Yellow Jackets: - Wait for the insect to land, and do not spray up into air. Use from a safe distance away from the insect. Hold container upright, point spray opening at insect to be sprayed and then press the button firmly for approximately one second, or until the insect is coated. Wasps and hornets must be sprayed directly and completely to be killed. Spray individual stinging insects or open-faced hives. Do not spray enclosed hives.-For treating open-faced hives:- Use after dusk when insect activity is minimal. Stand 15 ft away. Point spray opening at open hive and spray until all individual insects are coated. Do not stand beneath hive.- KILLS STINGING INSECTS: Wasps, Hornets, Yellow Jackets.- This product is intended to be used on open-faced hives where the cells and insects are visible. This product is not intended to be used on enclosed hives, or hives in an enclosed space (e.g. underground or in a wall).- A Note on Surfaces: This product may make floors slippery. To avoid possible injury from slips/falls or staining, after use, wipe away excess liquid after application with a cloth and clean with soapy water until the surface is not slippery. To avoid staining, test on an inconspicuous area before applying to surfaces as this product may damage or stain some painted surfaces, hard or wood floors, furniture and plastics.1. Spray at insect on surface thoroughly 2. Wipe/Clean Surfaces if Damp PLANTS: Don't spray directly on plants because it may damage them.