Whites Dry Suit How Do I Get A Really Bad Stain Out Of A White Suit (Read Inside)?

How do i get a really bad stain out of a white suit (Read inside)? - whites dry suit

Oaks, I do not know how to say this, but I had diariha hubby and my clothes were drying on the floor, got up and some of the poo was in her new dress that I tried to rub and not yet out, I I the lemon juice and all. it wont leave!

I try in May next year?

the dress is white