Peep this link.
The black one on the left works good, I have 3 or 4 of them.
Each refill lasts about a month in a regular room, and when it's empty, the bowl at the bottom is full of water, and you just dump it and refill.
Unit is like 15 bucks I think, and refills are like 2 bucks a bag.
I got mine from Camping World if you don't want to order.
http://www.drizair.com/
National Retailers | |
Ace Hardware
Camping World
Dick's Sporting Goods
Navy Exchange Service Command
Raley's
Rite Aid
True Value Hardware
US Army / Air Force Exchange
Wal-Mart (Locations vary) | |