Bonide Mosquito Beater Fog is an all-natural, residual formula that repels mosquitoes, gnats, flies and other nuisance insects for up to 2 weeks. Great for use on lawns, around patios and pool areas. 1 quart treats up to 5,000 square feet. Pleasantly scented with citronella, cedar oil, geranium oil and lemongrass oil. Convenient no mix spray can be used in all propane or electric foggers.