Not really, because they absorb the water it's very important not to use any kind of soap. It might do you more good to get to the bottom of WHY he stinks, because while a faint musky odor is to be expected, stink is not normal. What are you feeding him? What kind of substrate is he on? Are you cleaning up every time he poops as soon as you can or is he being allowed to walk through it? Have you have a fecal done to rule out parasites?