Well I wanted a larger fermentor, had read a lot of posts saying no problem with loose lid buckets. Tried it the first time almost a year ago, had to leave town, when I got back it was a fruit fly frenzy. Did some more reading, thought to myself if I put out a few apple cider vinegar traps it should be ok. For the most part it was working. I left town to take the kids to hockey again, came home late last night to be find that I can see about a dozen below the opaque lid crawling around. I will be opening tonight, once kegs are cleaned/sanitized because I’ve got another full day of kids hockey. Maybe I will try to pull the top layer with a turkey baster and see what happens, but with the number flying around,I’ll prob get a lot more once the lid is wide open and I start to syphon