My family is usually patient with my frugal endeavors but they were all growing weary of the indoor worm bin. The worms won't survive the cold of an Adirondack winter, so when it starts getting cold I move them from their outdoor worm bin indoors into an old cooler. Naturally, an old cooler doesn't have great drainage and as a result they developed little flying bugs that we just couldn't seem to get under control.
I knew that this was caused largely by excess moisture, which was creating an awesome breeding ground, but I was at a loss how to solve the problem in a frugal way. There was really no way to rehabilitate the cooler and a premade worm bin that is meant for indoors runs anywhere from $99 to almost $200. Jim wasn't keen on the idea of building another smaller worm bin for indoors because we'd need some kind of a drip tray underneath and the dogs would probably get into it. While I tried to come up with a solution, the worms were banished to the garage.
Thanks to Diane at The Vegetarian Group, my problem was solved! Here's the post she wrote that showed me the light.
You can make a worm bin out of 2 10-gallon rubbermaid containers.
Drill or poke holes in the bottom of one and just under the lip around
the top and set it inside the other one. It needs to sit up a bit; I
used 4 rocks, one for each corner. This way you catch all the good
worm "tea" which is beautiful fertilizer. Start with a nice layer of
shredded newspaper or coconut coir or peat moss (if you can get the
latter two, sometimes a little $$), dampen it down well, pour in your
worms, add a large-ish double handful of veggie trimmings and ignore
them for a couple weeks - presto worm bin :). Some finely-ground
eggshell every once in a while seems to help them reproduce.
So thanks to Diane, my indoor worm bin problem was solved for under $10. The bin has been sitting very unobtrusively in one corner of the kitchen for about 2 weeks with no bugs at all. Sometimes the best solutions are found in the most unexpected places.