This item may qualify for a Zoetis Rebate! Visit their rebate site for more details.Quest Gel by Zoetis is an equine dewormer and boticide oral gel that aids in the treatment of parasites. This dewormer is effective in eliminating and controlling a wide variety of parasites. This unique gel melts in the mouth instantaneously thus eliminating unwanted waste. One tube will treat a 1,500 lb horse.