Our mobile home has wallpaper on walls and wood framing around doors and windows. Can I use vinegar and water on the wallpaper or will it peel?
I have successfully used a damp wall mop or cleaning cloth with a diluted multi-purpose cleaning solution (Mr. Clean, Lysol all-purpose, etc,) I also have used a magic eraser for the stains that don't just wipe off. A magic eraser would also work well on the trim and/or woodwork. A magic eraser looks like a white sponge usually. Different brands have different names but these things are truly amazing. I have even gotten permanent marker off of wallpaper with them!
This is a page about cleaning nicotine stains from vinyl wallpaper. Nicotine in cigarettes mixes with oxygen and creates a yellow stain that can accumulate on your walls.