Country Vet, 16 OZ, Fly Spray, 0.50% Pyrethrins For Quick Kill, Provides Rapid Control Of Barn Pests, For Use In Beef Cattle Operations, Dairy Farms, Hog & Swine Operations, Barns, Stables, Livestock Premises, Milkrooms & Poultry Houses, Can Be Used On Cattle, Horses, & Swine, Kills Flying Insects Including Flies, Mosquitoes, Small Flying Moths, Gnats, & Wasps Crawling Insects Including Cockroaches, Ants, Spiders, & Silverfish Can Also Be Used On Pet Bedding & Pet Quarters To Kill Fleas, Active Ingredient: Pyrethrin.