Meet Groov, the original, patented crate training aid designed to encourage licking, proven to have a calming effect on dogs. It's a great enrichment tool and an easy way to help your pup love crate time. Use the included freezer shell to create a tasty frozen treat! Pairs with our Treat Spreads. Cross-Compatible: Works with Revol, Evolv, and most traditional wire crates. Calming Enrichment: Designed to encourage licking to help soothe dogs. Durable & Safe: High-quality, food-grade, and dishwasher-safe BPA-free rubber. Easy to Use & Clean: Simply insert onto crate panel and turn 90 degrees to attach to crate. When your pup is done, wash Groov and the freezer shell on the top rack of your dishwasher