My worm bin is doing amazingly this summer-- the spot is cool and the worms are tons happier with the variety of scraps we are able to give them from our CSA share.
The main challenge last summer were fruitflies. Once they came and got a foothold, they never really left. This year, thanks to Nick, there are virtually no fruitflies. As soon as a few arrive, they have an unfortunate (but surely natural) end. Sure, we have a giant spider living above our worm bins (getting obese), but that's nothing compared to the joy of a fly-clear landing.