Bonide Mosquito Beater Granules repel mosquitoes for up to 3 weeks! Mosquito Beater is non-toxic and biodegradable. Its pleasant scent comes from citronella oil, garlic, geranium oil, cedar wood oil, and lemongrass oil. Easy-to-use shaker applicator. 1.3 lbs. package covers 4,000 sq. ft.