[alpacassei]

Paper substrate such as Fitch, Carefresh, or Kaytee Clean & Cosy is all hamster-safe and sanitary. Switching to woodshavings or paper substrate will be much better for his health. It’s also not good to clean their cages daily. You should give him a deep layer of substrate for burrowing and clean out his toilet area weekly but only do a full clean out no more than once a month as it is very stressful for them.

Unless his condition worsens, wait til he’s seen the vet before trying to treat him yourself.