The salt method tends to work better on fresh stains. Make sure to blot up or flush the wet stain with cool water before applying the salt —this will help the salt sink in better. Patch-test this solution on an inconspicuous part of the couch first to avoid any possible damage.
You can either apply just baking soda or make a paste. To make a paste, mix 1 part baking soda with 3 parts water.
If you don’t have baking soda, you can replace it with salt!
Though this method is liquid based, you will still want to blot up the wet stain before applying the detergent.
Because hydrogen peroxide is a powerful and corrosive chemical, handle it with care and wear gloves! Hydrogen peroxide is also a mild bleach, so perform a patch test on an inconspicuous area of the couch first if possible. Check to make sure that the fabric doesn’t fade.
Consider performing a patch test on a more hidden area of the couch. If your couch is made of silk, use hydrogen peroxide as a last resort, as silk is an especially delicate fabric. [8] X Research source
Patch-test a hidden area of the couch first.
