Stain part Dawn dishwashing liquid, 2 parts hydrogen peroxide. Pour the cleaner right on the spots and use an old toothbrush to make sure it really gets into the carpet. Let it sit for maybe 30 seconds and then blot with a wet towel.
This is awesome! Homemade Heavy-Duty Stain Remover with things from around the house. I am totally going to use this! Dawn Dish Liquid (I heard no other brand will work for this) Baking Soda Hydrogen Peroxide
Style Secret: The Only Spot Remover You'll Ever Need
I used this and it does work! DIY Laundry Stain Remover: I found several old baby clothes that had yellow stains on them that were really dark. Some cleared up after one treatment, others after two. I was only left with a few items that didn't clear up!
Homemade Carpet Stain Remover Recipe: Simple & No Scrub