This guy talks about using sodium carbonate (in OxiClean) & says that worked for him. I've got a computer keyboard that has a built in handrest that turned sticky. I think I'll try some OxiClean on it. Nothing else has worked. I finally covered it with some saran wrap.I took a shot that it might absorb into it and make less sticky, and it seems to have worked.. Since the dash is textured, I don't want to damage that with abrasives. I actually used my bowling powder, but intend to try a few different things to see what works best and lasts.