DO NOT USE THE MAGIC ERASER. It is a microabrasion sponge,.....it does scratch plastic. I used it in a Tervis tumbler...drink tea in it all the time.....after a while the tumbler was cloudy looking....it was the microabrasion ont he plastic. I am now very careful where and on what I use Mr. Clean sponge on. It takes off the mark, but also takes of a micro portion of what you are cleaning. I use Carnuba wax from the auto parts store on my machines....makes them slippery too for FMQ....this wax would keep dyes from rubbing off on your machine. Janome recommends a damp cloth to clean with a mild detergent if needed. Any cleaning product should be followed by a wax.,....even using alcohol...follow with a wax.