I have my bamboo toothbrush in use for a few weeks and am happy with it. Of course, you no longer looks like new, but still good. Here I had had my doubts because I once - excuse the comparison - a wooden toilet brush possessed that very quickly unappetizing colored by the many moisture. I brush my teeth with baking soda, and considers this toothbrush good. Soda brings with natural materials for light sources, but it also disinfects.