The classic Stack with a sweet, carroty twist. Oxbow's Animal Health Harvest Stacks - Western Timothy with Carrots features all-natural Western Timothy Hay in an innovative, enriching format. The addition of dried carrots makes this product impossible for rabbits, guinea pigs, chinchillas, and other small herbivores to resist. Feed Harvest Stacks as a primary hay source or supplement with loose hay to encourage enrichment. Harvest Stacks make a great feeding option when traveling or anytime storage space is limited.