My water bowl is pretty small to start and I don't put a lot of water in it.
But, I made some changes. There are 3 rows of staggered holes about 1" apart around the sides and the lid. I also moved the tub from a corner to right next to a window where there is a channel of air. Granted, the humidity is still high in my area, but it's going down.
Here's a pic:
http://i730.photobucket.com/albums/w...0723091345.jpg