I have a chicken (a light Brahma) that is about 2 years old and has chronically sour crop. It seems to go down for a while but never goes away. I've tried giving her probiotics (a powder called ProBios) which I think has saved her life before. I have just started putting the unfiltered ACV in their water and hope that will help. I am planning on trying the Monistat when I go grocery shopping tomorrow. Thanks for the tip. Maybe this will work with her.