Eep! So I don't know what happened, but somehow we have ended up with an infestation of fruit flies in our house. I would like them not to start growing in my kefir, vinegars, and sourdough starter, but I'm unsure what to do, as I caught a few flying around in my sourdough earlier on. I removed the cheese cloth that I've been using, placed clean bandanas on top of each jar, and fastened it closed using the jar ring. Does anybody have experience with this? Will it be sufficient? Also, because I found a few flies in my sourdough starter, should I just be composting it, and starting over?