A comparison was made of the efficacy of zinc sulphate and formalin footbaths in treating foot-rot of a wide range of severity in a British lowland sheep flock. Solutions of 10% zinc sulphate and 10% formalin in a walk-through trough were used at weekly intervals on three occasions following initial foot trimming. Paring allowed accurate scoring of foot lesions. Ninety affected sheep were randomly divided between three groups: two groups having footbaths and a control group. Both agents were effective in reducing the total lesion score and the number of feet affected.
