Yes I read everything I've been using a respirator and gloves, even open safety glasses but I somehow missed the heat warning. And I got to the matting. The only deformation is a slight depression on top of the dome.
So for those of you who said experiment, brand name masking tape is a good option for pep. I used mine as a control and tried a simple pep with some brand I never heard of and it didn't stick. Scotch is the way to go.