Just thought i would share as it worked so well. I cleaned up my cloth Alphard seats which are blue but were incredibly dirty for a 73,000 km vehicle. - almost black. These get highly used im Japan obviously.
The seats are in excellent condition and very high quality. You can read a ton about it or get them detailed get a steam cleaner or "? . Or you can do what i did in 20 minutes. I've done a lot of carpet cleaning and had some Rug Doctor Oxyclean carpet cleaner. to be honest i think any carpet cleaner intended for an extraction machine would work. mixed it up 1 to 4 parts h20 . that's very concentrated. used a spray bottle and sprayed the seat I had a mittfull of buffing clothes and agitated the fabric with one and wiped it clean with another. 4 times in total. quick and easy . smells great and they're clean brother !