You may have to repeat this process 2-3 times, so don’t give up if all of the stains don’t come off after the first try.

1 dry cleaning sponge usually costs around $5. Don’t try to rinse out the sponge using water — this will cause it to no longer work.

Mr. Clean Magic Erasers are a popular choice for removing nicotine stains off of walls.

If you can’t find TSP, look for TSP-PF, which is the product without the phosphate. Wear clothes that you don’t mind getting ruined, as well as protective gloves.

Wear gloves and goggles when working with ammonia, and put on old clothes in case they get messed up.

If necessary, put painter’s tape on any edges that you don’t wish to be painted.

Try to avoid using a primer that’s water-based. The water lets stains soak through more easily.