Ortho® BugClear™ Insect Killer for Lawns & LandscapesKill outdoor insects with Ortho BugClear Insect Killer for Lawns & Landscapes Concentrate. Kills ants, ticks, armyworms, mosquitoes, fleas, spiders, hornets, scorpions, and other listed insects. For best results, apply with an Ortho Dial N' Spray or tank sprayer when bugs first appear. Non staining and odor free, Ortho BugClear Insect Killer for Lawns & Landscapes Concentrate starts killing within minutes and provides long lasting control in your yard.