Seleen Dosage and administration Route of administration Topical. Recommended application 25 to 100 ml depending upon size of animal. Directions for use 1. Wet the coat thoroughly. 2. Shake the bottle. Mix 25 to 100 ml of suspension with an equal volume of warm water according to animal size. 3. Avoid the eyes and lather well into coat and skin. 4. Leave the suspension in contact for 5–10 minutes. Then rinse thoroughly and dry. Treatment should be repeated at intervals of one week if necessary.