Mane 'n Tail Horse Shampoo, 1 gal., 541504 at Tractor Supply Co.
Horse shampoo not just for show ponies - Horsetalk.co.nz
Agradi Horse Shampoo Tea Tree Horse 2,5L - Agradi.com
MANE 'N TAIL Pet Shampoo, 1-gal bottle - Chewy.com
Amazon.com : Natural Rapport Horse Shampoo & Conditioner - The Only Equine Wash Horses Need - Full Mane and Tail Treatment for Horses, Horse Shampoo/Conditioner (16 fl oz.) : Sports & Outdoors
Mane 'n Tail Medicated Horse Shampoo, 32 fl. oz., 544606 at Tractor Supply Co.