After that, I took out some of the interior panels and laid them on the ground. I wiped one down with Bioclean Bac-out an done with Simple Green. Simple Green initially did the better job, but then my wife broke out the "Magic Erasers". I know everyone has seen these strange little white teflon based sponges. The tore right through the grime. I don't recommend them on the seats, but I will give some more information as time goes on. We have multiple stages of cleaning to take care of. I am providing a few pics, starting with the Simple Green vs. Bioclean and then into the "Magic Eraser". Thanks for reading.