This level 3 challenge slider puzzle is easy to fill and load up with food and treats with its easy slide out tray. Simply slide out tray then fill and slide back in ready for your pet to enjoy. Be sure to interact with them and play with them with the puzzle at first to get them used to using it and solving it and offer lots of praise while they do it. 
Enrichment puzzles are designed to enrich your animal companion and thus help prevent destructive behaviour.