The cage is completely enclosed, but it's pretty large and has 2 heat lamps in it so it dries out if I don't mist. And sorry, no tin foil and duct tape, I don't think my wife would like the looks of that in our family room!
You have a few more options then one is to use a UTH or RHP and get rid of the lights, or keep doing like you've been doing and just mist the crap out of the cage.
Best of luck. !
When you've got 10,000 people trying to do the same thing, why would you want to be number 10,001? ~ Mark Cuban