Safe, easy-to-apply liquid constricts muscle at end of leaking teat. Helpful for does with large orifices. Use on DHIA test day to be sure doe gets credit for all the milk she produces. Use at shows so a heavy milker doesn't lie down and squeeze milk out one side of her udder. One thin layer of liquid over the orifice does the job. Safe for occasional use, although it might cause irritation if used every day. 1.75 oz. bottle.