Hey there
I use Meguiars APC when I need to clean any surface inside the Beast. You can get a gallon worth for around 20 bucks.
https://www.amazon.com/Meguiars-MGL-D10 ... se+cleaner
This line is also part of my mobile detailing business
I do a four parts water and one part solution in a spray bottle. Spray area and agitate, once solution has foamed up I use a wet/dry vac to lift the solution and let it air dry. You many have to repeat this step depending on how bad the area is.
Below is a list of things I use this APC on:
Floor liner
Floor mats
Cloth seats
Safe on leather seats
Dash
Any plastic areas in the vehicle.
Great engine cleaner as well