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.