(Moxidectin) Ready to use topical formulation for control of roundworms, lungworms, grubs, lice and mites in cattle. Also provides 7 days of persistent activity against horn flies. No slaughter or milk withdrawal. Not for use veal calves. Apply 1 ml for each 22 lbs. of body weight along the top of back from the withers to tail head.Efficacy not affected by rainfall.