For initial treatment, apply daily for 2-3 days. As infestation subsides, repeat treatment every 5-10 days or as prescribed by a veterinarian. Also reapply every time animal is washed or exposed to heavy rain. Horses, Ponies and Foals: Thoroughly brush the horse's coat prior to application, to remove loose dirt and debris. For dirty horses and as a preparation for show grooming, clean the coat with a shampoo. Wait until coat is completely dry before applying spray. Cover entire surface of animal with spray, but avoid getting Product into horse's eyes or other sensitive areas such as mouth or nose. Brush coat against grain while spraying to ensure adequate penetration of Product. As a wipe, apply liberally with a clean cloth or sponge. Make sure spray has completely dried before covering with any tack.