For anyone who has a Baby, as all babies produce Yellow Staining Poo (and it does get on the carpet, no matter how hard you try not to let it :/ ).
Anyhow, this stuff actually works, and it's cheap.
A spray bottle
A 12oz bottle of Hydrogen Peroxide (cleans and disinfects)
2-3 drops of dish soap (cleans)
1 teaspoon of baking soda (deodorizer)
dissolve baking soda in a little water.
Pour into spray bottle.
Pour HP into spray bottle.
Add 2-3 drops of dish soap.
Close spray bottle and shake to mix.
Spray on 'spots' on carpet, allow to foam a bit and blot with a damp washcloth. Repeat until spot is indistinct.
Any residue will come out next time carpet is cleaned.
What reminded me to post this? I just had to clean up a stealth poop off our bedroom floor. Sigh.