How do you clean walls that don't have washable paint on them?Spray the towels with white vinegar and let them sit for a few hours then wash. That should do it.
The car is more difficult. Vinegar can help (I sprayed my seats). Then I kept a bottle in the car and sprayed it down (including headliner) each time I got in. I sprayed Febreeze in the vents in the heater/A/C unit. That helped too.
If you need to clean walls in your house, Scrubbing Bubbles is the BEST at getting the goo and smell off the walls. Just wipe it off with old bath towels.