Okay, I got this from TSC, but Amazon has it too. I live about 3 miles from a horse farm and my girls are plagued by migrating flies. Horse-flies. giant, evil, nasty winged demon flies. This thing is Ah-mazing! Reminder to hang it OUTSIDE the coop/run. It's also a little gross when it gets full, but if you don't look too closely, you'll be fine. It is reusable too. (Nope, I didn't get paid to say this!)