What is the best way to remove poops stains from clothes after it has already dried up?
FIRST- clean off any/all loose - excess... (as much as possible), leaving only stain.
Start washer using hottest water possible for items being washed.
Add regular amount and type detergent.
Add 1 cup bleach
Add ! cup automatic dishwasher detergent.
Add clothes and let agitate a few minutes.
Stop washer / soak for ½ hour (not more than 1 hr!).
Continue washing as usual....
If stain is bad, may require a second treatment/washing.
This works for many types of stain.