Pros - Very roomy
- Easy access for cleaning etc. with two doors and hinged roof
- Relatively inexpensive, especially given the size
Cons - Very heavy -- hard to move for cleaning, especially when it is time to give it a good hosing down
- I'm not happy with my second level - the shelf I have is functional but messy and hard to keep clean
- Go through a lot of bedding as there is a lot of floor space to cover with bedding
Honestly, if I had to do it over again I'm not sure I would have done it this way. There are many other possibilities for building cages, and some good ones can be found on this
"Rats in the Workshop" page from Rats on the Hill.