No judgments for why it occurred. Angry. Heat of passion. Accident. None of my business. I’m just the problem solver…for the stain. Removing a corpse from the planet (without a trace) is not really my forte. Sorry.
So before you start it’s of vital importance that you know what type of wall material you’re dealing with. Totally will affect the way you clean it, as you'll see from the tips I provided.
Wood – Use a sponge or cloth soaked with cool water to wipe the stained area.
Stone – Same as above. However, if the stain still doesn’t come out try using a mixture of powdered detergent, chlorine bleach, and water.
Plastic, Linoleum, or Tile – Use warm, soapy water for the sponge or cloth.
Grout – Try cool water first. If the stain is still there use baking soda with water.
*** In all cases*** Once the stain is removed, wipe over the area with water again, then dry with a fan.