Provita Hoofsure Combat is a unique film-forming spray containing tea-tree oil and organic acid providing persistent longer-lasting activity. Combat should be used for spot spraying in parlour or during hoof trimming. Its waterproof, breathable film promotes natural healing. The cost per application is approximately 30p. When to use: Dairy cows – at first sign of lameness, re-apply every milking for 3 to 7 days. Can be used after hoof trimming. Sheep – at first sign of lameness, re-apply as needed. Can be used after hoof paring.