Home Defense Backyard Mosquito and Bug Killer Area Fogger allows you to protect your lawn and landscape from mosquitoes that may transmit diseases like Zika and West Nile. Simply press the valve and let the aerosol mist kill and repel these outdoors pests in the hard-to-reach places where they thrive. Continues to kill mosquitoes that land on treated surfaces for up to 8 hours. Covers up to 2,250 sq. ft.