What are the dos and don'ts regarding cleaning a bamboo cutting board?
The care of bamboo cutting boards is extremely similar to that of traditional wood cutting boards:


Prime them with mineral oil, and refresh it every month or so.  (Wipe with oil, let sit for a while, perhaps 15-20 minutes, wipe off).
Wash only with mild soap, and rinse and dry immediately. (Wipe off and let air dry.) Don't put in a dishwasher.
If using for raw meat, you can sanitize with a very dilute bleach solution (about a teaspoon of liquid bleach per quart of water, 5 mL per liter).  Rinse thoroughly afterwards.