Really don't know if this will work on all bone scales but I have a set of scales that was kind of dirty looking. Now I'm not only cheap but lazy. I got a glass of water and put one of my Pollydent over night tabs in it with warm water and the scales with out the blade. it seams to have worked. the scales were clean and bright so I re-oiled them with the razor oil from SRD and put the blade back in. will hone tonight. Bad typing it's suppose to say cleaning bone scales.