Bed bug stains on your walls can be identified as red-brown marks. To clean your walls from the stains you can use dish soap and water, rubbing alcohol, Oxalic Acid, baking soda, or a stain remover.
There are a handful of ways you can remove the reddish-brown bed bug stains from your walls. The methods are easy to do and you can use items that already are found within your home.