There are a number of ways to successfully remove feces stains on underwear. This is a guide about cleaning feces stains on underwear.
Londonist Interviews A Man Who Sells Pre-Stained Underwear
How to Get Poop Stains Out of Baby Clothes: Simple Steps
Miss Mouth's Messy Eater Stain Treater Spray - 4oz 2
Vaginal discharge: What's with your panties turning white in the middle?
Soiled Underpants Pouches : stained underwear wallet
Stains on a Yellow Raincoat?
How To Get Poop Stains Out Of Clothes, Furniture, & More
Why are worn undergarment so clean in Anime? - Forums
White Polyester Spandex Top Turned Pink?
Removing Permanent Marker from Dried Clothing
Poop Stains Women's Underwear & Panties - CafePress
Plant Dyed Underwear on : r/Chainsawfolk