The American Society for Microbiology recommends disinfecting all surfaces, including kitchen, bathroom, and office, with 1% sodium hypochlorite (a common bleach).
To do this, you should put your hand in a glass jar with the lid off, open the jar, and shake the jar with a plastic or glass bowl.
After shaking the bowl, gently pour the sodium hypothlorite into the jar.
If you’re not sure what to do, ask a professional.
If your hands feel wet, try rubbing the jar or wiping the jar under the hand, and then rinse with warm water.
Wash hands after using the bathroom, but do not use the sink to wash your hands.
Be sure to keep a towel handy and to use it after using your bathroom, because it can be hard to get the chlorine out of your hands when the water is running.