Add a little peace, happiness, treats, and long-lasting entertainment to your dog's playtime. Outward Hound's Nooks are a treat-dispensing challenge dogs simply can't resist! Made with durable Orbee-Tuff material, Nooks are BPA, lead, and phthalate-free. Just stuff the Nooks with your dog's favorite kibble, dog treat, or a smear like peanut butter or yogurt before playing a game of toss and fetch, or allow your dog to problem-solve to release the treats during independent playtime. The mental stimulation dogs receive from treat-seeking play activates natural instincts and provides both mental and physical exercise. This helps calm anxiety and reduce unwanted behaviors while making playtime all the more fun. For an extra challenge, combine the Nooks with a standard-sized 5"" Snoop. Your dog will have to seek treats in every ""nook and cranny"" and work to remove the Nook from the Snoop to access all of the enticing rewards. The Nooks are 2.5"" in diameter and come in multiple colors and styles. Clean using warm water and mild soap. Rinse well. SAFETY & CARE: No toy is indestructible. Choose toy based on pet size and playing habits. Toys should be inspected regularly and not left with any dog unattended. If damage occurs, replace toy immediately. Intended for dogs only. Keep out of reach of children.