just wondering how far down you are thinking of going to stop them digging out Russians are great diggers i found my 1 year old 1 1/2 foot down at one point and shes only tiny lol they will dig a network of tunnels going down, up, across you name it

Well it's just not an option for me to have anything down that far in our yard. But of course I will be doing "head counts" a few times a day, so hopefully I'll be able to catch anyone who might think of an escape!

You could always put chicken wire across the bottom and then fill it in with dirt/soil etc. then you don't have to worry about them digging out.

Misty: I like that bamboo enclosure and it is cheap if you think about the cost of wood, and if it comes with a liner, they won't beable to dig out.