When I bought my reloading stuff I got it from a widow who's husband had died. The tumbler was full of media already and looked decent enough so I assumed it was fairly new. I've always cut up a dryer sheet and put it in and that keeps the dust out. I noticed today that it is starting to stick to the sides of the bowl, I didn't know if that was a sign I put in too much polish or maybe if it was time to change. Thanks guys.