Pyranha Stock Guard Concentrate Pet Insect Repellent, 64-fl oz bottle; If insects like flies, lice, ticks, beetles and gnats are driving you buggy, give Stock Guard Fly Spray Concentrate a try! Made for use in automatic misting systems, this concentrate—which makes 50 to 200 gallons of spray—helps control insect pests on your animals and property. Safe for cattle barns, milk rooms, horse barns, swine houses and kennels, you might feel like you are miss-ting out without it!