You need 4 items. 1. 409 Cleaner 2. scrub brush 3. Terry cloth rag 4. Chemical Gays Rubber + Vinyl Mat Renew. See Pictures. Spray liners with 409 cleaner scrub with brush rinse repeat again. Let air dry for 15 mins. Spray with Vinyl mat Renew. Use scrub brush to work in cleaner. Wipe with Terry cloth and repeat. Let air dry. The best think is cost of the cleaner shipped to 49855 was $11.73. Plus it works better than the high priced WeatherTech Cleaner/Protectant