Kills mosquitoes that may transmit the Zika Virus. 3 month protection (applies to ants, fleas, American dog ticks, and spiders excluding black widows). Starts killing within minutes. Treats up to 5,300 sq. ft. For use on lawns, around home perimeter, ornamentals, flowers, trees, shrubs, vegetables and fruit trees Ortho® Home Defense® Backyard Mosquito and Bug Killer Ready-To-Spray allows you to protect your lawn and landscape from mosquitoes that may transmit diseases like Zika and West Nile, as well as ticks, fleas, and over 200 other insects. Just hook it up to your hose and spray following label directions.