spot clean with mild soap and warm water, vinegar or another non-toxic cleaning spray. DO NOT SOAK or IMMERSE. wood is porous, soaking may lead to swelling and warping.
after a while, the occasional moisturizer may be beneficial. treat with binky beads wood conditioners, coconut oil, grape seed oil, beeswax polish or another food-safe oil on the bare wood pieces. DO NOT put oil on the paint, it may discolor.