Wooden gnawing roller with water hyacinth for rabbits and rodentsThis nifty gnawing roller attached to the water hyacinth from duvoplus is the ideal accessory for your rodent's cage. It combatsennui, encourages rodents' natural instincts and keeps their teeth healthy. Rodent teeth are constantly growing. By gnawing a lot, they control the growth of their teeth. Made of quality wood, it's a healthy and essential cage toy.