Removing red food coloring or red wine from carpet.
Gently blot what you can. Refer to my stain removal guide for blotting and general stain removal instructions.
Mix a 50/50 solution of a fresh bottle of hydrogen peroxide and water. Spray on the spot sufficiently to saturate the spot, wait 10 to 15 minutes then blot with 1/4 cup distilled white vinegar per quart of water. Then again with plain water. Wait 24 hours and repeat if needed.
If your dog or cat leaves red stains in your carpet after eating, switch food. It's the red dye in their food that causes the problem. Dogs and cats are color blind. Switching to a neutral color food eliminates that problem.