they were preliminary hoof paring with weekly footbathing either in 10 % formalin , or in 10 % zinc sulphate + 0.2 % anionic surfactant ( 'teepol ' ) , or twice-weekly footbathing in the same zinc sulphate-surfactant mixture without hoof paring .
C0038720
sulphate
C0078794
zinc sulphate