Bamboo is the choice of many environmentalists. As a hard grass, it is a sustainable, renewable resource that needs no chemicals to thrive or to be harvested.
As far as we know, no independent studies have been done on how sanitary bamboo cutting boards are. However they do absorb less liquid than wooden boards, so many believe they are as sanitary or more sanitary than wood boards.

Be aware that they are 19% harder than traditional maple cutting boards, so many also think that bamboo cutting boards are harder on knives than wood boards. Also, the small grooves may ever so slightly catch your knife, interrupting a smooth cutting action. When shopping for a bamboo board, look for ones that use formaldehyde-free glues