Finding I'm using Microfiber towels for everything from polishing and buffing to finally getting the windows clean with one towel to apply Invisible Glass and the other to buff the glass. The result is an ever growing pile I'm not sure what to do with. How much Turtle Jet Black wax and polish is safe to run through the washing machine without leaving some kind of film that's going to affect the next wash? Or should I just stop being cheap and toss 'em? What are you doing with them?