Woobamboo Bamboo Toothbrush For Pets Small Breed is the perfect sized tooth brush for your small breed dog or your cat! The handle is made from organically grown, sustainable, biodegradable, and antimicrobial bamboo. The recyclable bristles are Dupont Tynex, arguably the best quality and most trusted bristle available. Finished with your Woobamboo? Pull out and recycle the bristles, and throw the handle into your compost where it will gently biodegrade.