Originally Posted by
quiltedsunshine
An old fashioned gum eraser takes it out really slick. We sell a lot of erasers at the store, because it works so well.
After reading this and HoneyJ's post, I took my really old eraser and worked on my mat. The batt marks are Gone! After scrubbing, I wiped over the spot with a damp cloth to remove eraser crumbs. I'm happy!