Farnam, the first choice for horse supplements, pest control or leather care. Farnam horse supplies include supplements, fly sprays or grooming products. For the horse that has difficulty holding weight, check out Farnam Weight Builder. A leader in the market. Choose from Farnam Just One Bite, in various forms, for control of mice or rats in the stable. Let's not forget your dogs or cats. Farnam makes a good selection of flea and tick pet products for their comfort. All Farnam horse products and pet products are covered by the HorseloverZ 100% Satisfaction Guarantee.