As long as you are able to scrub off and actual poop, I think they should be ok to clean. Wooden cutting boards have been common for years, and not everyone dedicates one to raw meat. I read somewhere that they actually can harbor less bacteria than plastic ones, because in a plastic one stuff can grow in all the little interstices where it gets cut. A wooden one sprays the moisture out and lets it evaporate quickly. So basically, of you wash it periodically and let it dry completely before putting it back, it should be ok. If it gets poop smeared all over it that might be harder to deal with, but probably not impossible.