[Drago]

I recently purchased a second hand wodent wheel for my mice, and it was quite silent at first, but now seems to be making the most horrendous noise I've ever heard! I've tried oiling it, but that only worked for a short time. It sounds almost like nails on a chalk board and I can only imagine it's bothering my little mice. Has anyone experienced this problem, or have any tips regarding what I should do with it?