Originally Posted by aaronz
Yup. I'm very careful about dragging snow into the car, but still had the worst salt (or whatever they use now!) stains ever after this winter. It was actually crystalizing around the bottom corners of the dead-pedal.
I used my Swissvax wheel brush (not an overly stiff, med-long bristled brush), and brushed on some warm water on the stains to help start dissolving the salt. Then I sprayed on 303 Upholtery/Carpet cleaner and agitated with the brush. Use a wet/dry vac to suck up the mess, then repeat if necessary. Finally, rinse by brushing on clean water, vacuum as much moisture away as possible, then pat dry with a MF towel.
Came out really well. Should have taken pics.