I built one of these last week and it really works!!! I have just confirmed it. One of my girlfriend's friends came over and she said the smell was almost gone. I built it for a little over $70. I looked at buying one but they are $200-$300. I highly recommend you make one if you keep your snakes in the house. It gets rid of about 95% of the smell from my 48 snakes, 12 geckos, and 4 level rat rack.
I hung mine on the wall and I keep my ceiling fan on low to help circulate the air.
A++++ Thanks Jake!!! The only down side to all my animals was the smell but this has gotten rid of it.
Thanks
Trey