I was just wondering if something like this would work for a small colony of rats? I purchased it years ago for a rescued monitor and it has been sitting empty ever since:

http://www.reptiletubs.com/ve175photos.htm

It is thick plastic and already has a bunch of air holes soldered near the top of the bin with smooth edges, though I suppose I could just make a top to fit with wood and 1/2" wire. The dimensions are 20 7/8"W x 52 7/8"L x 14 1/16"H. Thanks so much!

Lauren