Mats tend to form "ripples" and can curl up at the edges if they haven't been serviced correctly and/or have been in service for too long.
Wildman performs regular quality control checks on our mats, which are all stamped with a "put-in-service" date to ensure older mats are replaced and recycled. Wildman's premium floor mats have a beveled exterior edge to help prevent curling and are 1.5x thicker than the traditional rental floor mat!