In general, it is not recommended to provide water baths for hamsters. Hamsters have a certain repulsion towards water, and they have a habit of cleaning themselves by licking their fur to keep them clean. Using a water bath can cause your hamster to become alarmed and upset, and may cause colds or other health problems.

If your hamster is dirty or oily, consider using a sand bath. Provide some special sand baths for hamsters, containing some fine sand or dust specially designed for hamsters. Hamsters will clean themselves by rolling and wallowing in the sand bath.

If you really feel the need to clean a stain on your hamster, use some fragrance-free, non-irritating wipes and gently wipe the stained area. But make sure the wipes don't contain alcohol or other ingredients that are harmful to your hamster, and avoid getting your hamster soaked.

In general, providing hamsters with a good living environment and appropriate sand bath conditions is more conducive to their health and happiness . In any case, be careful when using water to clean your hamster to avoid unnecessary stress and health problems.