Birdsall's Farrier Barrier is designed to battle white line disease, thrush, canker, and bacterial infections that attack the hoof. It also helps elimite soreness of tender feet. Farrier Barrier protects the horse's feet against the harmful effects of moisture from morning dew and bathing. It improves cracked feet without drying them out, and will make the hoof tougher. Available in 16 oz with brush and 32 oz refill.