Expand your pets living space to create the ultimate pet habitat with this functional accessory * Dual purpose design makes for a safe nesting box or a dust bath for your pet * Flip-up lid provides for easy access and truble free cleaning * Features Super Protect Antimocrobial Technology to provide a healthier, cleaner accessory for your pet * Universally connectable so it easily attaches to all CritterTrail, Habitrail, and S.A.M. syatems