Ivermectin is still an excellent parasiticide for controlling many gastrointestinal round worms, lung worms, sucking lice, and mange. It is cost efficient and easy to administer. Many have asked for this internal and external parasiticde pour-on for cattle. Labeled as effective against gastrointestinal roundworms, lungworms, grubs, horn flies, sucking and biting lice, and sarcoptic mange mites in cattle. Label dosage: 1 ml per 22 lbs. of body weight. 8.5 fl. oz. treats about 50 goats.