Have the horse as clean as possible. Ideally, bathe the horse with soap and water, and scrub with a brush to get the deep dirt out. Rinse thoroughly. If it is too cold to give a bath, try vacuuming. If these are not options, use a curry comb or a long nylon mane comb (like a curry comb) to get down to the skin and loosen up the dirt and dander. Then brush the horse to remove the loose dirt.

The most common mistake users make is not setting up their combs and cutters properly. The cutter MUST be set at least 1/16" back from the tips of the comb or it will not cut!