Oxbow Harvest Stacks use special compression technology to transform 100% all-natural, long-strand, hand-sorted Western Timothy hay into compact, convenient-to-feed portions which produce 80% less airborne dust than loose hay (Airborne dust particle testing is performed in a controlled environment and measures milligrams of dust per liter of air). Feed Harvest Stacks as a primary hay source or supplement with loose hay to encourage enrichment. Contains no binders, and is 100% hand selected and sorted hay. Harvest Stacks make a great feeding option when traveling or anytime storage space is limited. Carrots add variety and encourages consumption and foraging instincts.