I have a question about how best to maintain these types of grappling mats. Link follows.
We happen to also use these mats for weightlifting.The weight plates that we use are Virgin Rubber Bumper Plates. Link follows. (LINK)
During our classes these bumper plates have occasionally left rubber marks on the grappling mats, and these marks have not come off with a simple rub of the hand or a steam mop.
Any advice on how to remove the rubber marks off the mats, with out damaging the mats would be greatly appreciated.