Description Shapley's Original M-T-G Mane Tail Groom Plus Horse Solution treats skin issues at the source with proven results. It has all the power of the original formula but with a light, fresh, herbal scent. This unique solution is recommended by veterinarians for a variety of bacterial and fungal skin problems. M-T-G has successfully treated rain rot, dew poisoning, scratches, mud fever, greasy heel, sweet itch, girth itch, itchy skin, dandruff and tail rubbing, and itâs also been used on thrush and white line disease. It works by drying up the affected area so it can begin to heal. Then it conditions the surrounding skin and promotes hair regrowth. Results can be seen as soon as the next day, and youâll see visible hair growth in three to five days. M-T-G has also been proven to add volume and length to mane and tail hairâas much as three inches per month. Itâs also great for hot spots and soothing itchy, dry skin on dogs, cats and livestock.