I would recommend the WeatherTech cleaner.https://www.sharptruck.com/techcare-floorlinerfloormat-cleaner-kit-18-oz-8ltc37k.
Just take the liners/mats out of the vehicle. Clean off the large debris/dirt/mud with a hose. Apply the cleaner and scrub the liners and then rinse.
You can also apply the protector after cleaning to keep them looking new, https://www.sharptruck.com/techcare-floorliner-floormat-protector-kit-one-18-oz-bottle-8ltc38k
Admin answered on 8/8/2019