Golden Hoof is lethal to footrot bacteria. It penetrates ovine hoof horn more readily than other anti-bacteria agents. Unlike formaldehyde preparations which kill living tissue & cause hardening & subsequent cracking, zinc sulphate is a healing agent which promotes the growth of new healthy tissue. Golden Hoof Plus contains the original zinc sulphate preparation which has been enhanced by the addition of a surfactant to increase penetration into the hoof & an activating agent to give easier mixing.