Alright, this is my first time using fermcap-S and I still woke up this morning to a mess of krausen coming out of my airlock. The instructions on the bottle said to add at the beginning of fermentation. I know many of you add it for foam control during the boil, but I added it at the beginning of fermentation. 10 drops, 2 per gallon just like the instructions said. It just kind of sat there on the surface and I figured it would eventually get mixed around and do its job. Then the foam started creeping up the neck and I decided to add 10 more drops. It took down the foam that it was sitting on, but hasn't been heard from since. WTF?