Off Bug Control Backyard Pretreat Perimeter Treatmeant, 32 Fluid Ounces Backyard Protection - Effective mosquito treatment for the backyard perimeter. 16,000 sq. ft. - It covers up to 16,000 sq. ft. and kills insects outside on outdoor surfaces for up to 8 weeks. Effective - Kills 110+ insects. Two Settings - The hose end has two setting options to give you the coverage you need, with a straight stream for taller trees and a fan pattern for low-lying plants and gardens.