UltraShield, the most technically advanced insecticide and repellent, provides the ultimate protection for your horse. It repels flies, mosquitoes, and gnats on horses for up to five days. Its water-based formulation has three active ingredients, contains two sunscreens, and is pleasantly scented with citronella. UltraShield can be used on horses and ponies, as well as stalls and bedding. On dogs, it kills fleas, ticks, and lice and provides up to 28 days of protection from re-infestation. -Most advanced, ready-to-use fly repellent available -Insects are killed and repelled for up to 5 days -For use on horses, ponies, dogs, stalls, and bedding -3 active ingredients: Natural Pyrethrins (from chrysanthemums), Permethrin and Piperonyl Butoxide -Repels and controls house, stable, horn, face, horse, and deer flies, mosquitos & gnats -Kills fleas and ticks -Water-based -Contains two sunscreens to extend repellent's effectiveness -Grooms and moisturizes with aloe and lanolin