I hate how disgusting the floor gets from doing that mats with the deck brush. I’ve started doing the mats differently during clean plays..... I do them in the sink, use restroom cleaner and a bristly scrub brush. Your arms and apron get destroyed but it saves your backroom from becoming a swamp. They also come VERY clean. Just have to make sure you clean the sinks out very well after doing this with bleach cleaner.