The beauty of this feeder is if you place the food stock by a dumpster or somewhere there is a good fly population they lay so many eggs that they consume the feed so fast it barely has any smell. I would catch common carp from a local lake place it by the dumpster for several hours then put it in the feeder they would hatch and consume a twenty pound carp in about a week and a half down to skin and bones. The best part of this was the excuse to catch carp on light gear. I burned up several light spinning reels doing it and you can see the growth increase in your fish