What to use on WeatherTech floor mats?

After one Ohio winter my Weather Tech floor mats are stained and worn looking.
Scrubbed them with Dawn and they looked brand new when wet . However after they dried they looked horrible.
Thinking of using PB'S APC and Trim Restorer or Natural Look.
Anyone else having or had this problem?
If so what did you use to remedy this dilemma?
As always thank you in advance.
I used Natural Look on mine & they were VERY slippery so I scrubbed it off; haven't used any conditioner on them since. I don't know if it's kosher to say this here but on another big forum there's a thread about this & lots of longtime members used the cleaner & conditioner put out by WT, they're real pleased with the products despite the hefty expense.