Ivermectin Pour-On for Cattle is a pour-on for treatment and control of parasites in cattle. Ivermectin pour-on is effective against roundworms, lungworms, grubs, horn flies, sucking and biting lice, and sarcoptic mange mites in cattle. Rain-fast after 6 hours. Ivermectin Pour-On contains 5 mg ivermectin per ml. Apply to cattle along the topline in a narrow strip extending from the withers to the tailhead. 1 Liter size includes measuring cup. 2.5L and 5L sizes may be used with Pour-On Gun, sold separately. Safe for pregnant cattle. Use at the rate of 1 ml per 22 lbs. body weight.