Originally Posted by
dakotamaid
If you have a warped mat lay it out on a hot side walk for a while. Works like a charm.
I'm glad this works for some people. I laid my warped mat on the driveway in the August Texas sun. Nothing changed. Then I laid a piece of glass over the mat and left it out on the driveway for about six hours. Nothing happened. It was worth a try, of course, but I finally gave the mat away and don't know what happened to it after that. froggyintexas