Amazon has Guardian EcoGuard Indoor Wiper Floor Mat, Recycled Plastic and Rubber, 4′ x 8′, Charcoal on sale for $79.01
Shipping is free w/Prime
Carpeted surface is made from 100% post-consumer plastic bottles.
Backing is made from used tires.
24 oz. fibers for better absorbency.
Bi-level construction traps dirt below surface.