New in box Diggs Groov Crate Training Aid., Navy Blue Help your dog love their crate with the Diggs Groov, the patented training aid designed to encourage calming licking behavior. Perfect for puppies or crate-anxious dogs, it creates a positive association with their space. Universal Compatibility: Fits Revol, Evolv, and most standard wire crates. Easy to Use: Just add a dog-safe spread (like peanut butter), attach to the crate, and lock with a 90-degree turn. Freezer Friendly: Includes a freezer shell to create a long-lasting frozen treat. Safe & Durable: Made of food-grade, BPA-free, all-natural rubber. Top-rack dishwasher safe.