(Pfizer Animal Health) (Doramectin) For treatment and control of internal and external parasites in one convenient application. Effective against roundworms, lungworms, grubs, lice and mange mites. Apply at 1 ml for each 22 lbs. of body weight. Apply topically along the mid-line of the back from the withers to the tailhead. Dispenser included with 250 ml and 1000 ml sizes.