Description Kill outdoor insects with Ortho 32 oz BugClear Insect Killer Ready-to-Spray. Kills ants, ticks, mosquitoes, fleas, spiders, hornets, scorpions, and other listed insects. It's easy to protect your backyard from bugs--just attach your hose to the sprayer. Non-staining and odor free, Ortho BugClear Insect Killer for Lawns & Landscapes Ready-to-Spray starts killing within minutes and provides long-lasting control in your yard.