Absorbine® has raised the bar in the fly control arena with the introduction of UltraShield® EX - the sweat resistant insecticide and repellent formula that will protect your horse for up to 17 days. This repellent is an enhanced version of the original UltraShield® and sets a new standard for ultimate insect protection. Favorite Features Kills and repels more than 70 insect species Stays active for up to 17 days Contains multiple sunscreens and coat conditioners including aloe and lanolin Can be used on horses and dogs