Heiskell's Feed Depot is proud to carry Durvet Inc. in Visalia, California. Durvet opened for business in 1970, its doors were literally attached to a van carrying its animal health care products warehoused in a tiny 500 square foot rented facility. Durvet was the first entity in the OTC animal health market to be involved with both manufacturing and distribution, and this vision proved to be the model for the animal health supply chain business. Its original 13 distributor/owners had combined annual sales of $20 million. But from those modest beginnings, Durvet itself has grown to nearly $200 million in sales, while each year its 21 independent distributor shareholders sell billions of dollars in animal health and agriculture products.