Bon Avi Loofah Tri-RingBon Avi Loofah Tri-Ring is great for stimulating your feathered friends. All wooden pieces are dyed with a natural vegetable-based colour. Veggie blocks are strung on sisal rope or stainless steel chain. There is no concern if any chew parts are swallowed, as it can be digestible. A fantastic addition to any bird cage.