So I have been doing the storing my pump parts in the fridge technique, washing in dawn every 24 hours and sterilizing in the microsteam bags every 24 hours. As I was drying my parts after sterilizing today, I noticed this in both valves (see pic). Is it mold? Yiiikes. How do you all dry in there? I have been using paper towel but maybe that isn't enough. Perhaps compressed air?

In the meantime, I am using a new pair. I should throw out yesterday's milk right? He probably already had some of it since I am EPing. He seems ok right now. It's like 15 oz in the fridge... So sad