clean the upholstery in car
I just use a hand vac and qtips for hard to reach areas. I found that newspaper and a little vinegar makes a good thing to clean windows with.
If you decide to use upholstery shampoo, I would dry brush & vacuum it very well first. I would also look for a vacuum-able shampoo.
Spray on foam rug cleaner works. Just vacuum before and after. Let dry with windows open.
I use a combination of white vinegar, blue dawn and a smidge of baking soda mixed together and wiped on this fiber cloth and then wiped down with another that's just
moisted with water to rinse. Cleans upholstery very well. Omit baking soda to use on leather or dash as baking soda is a tad abrasive