I thought those ferretrail tubes looked like fun, but I was worried my lazy boys would never go in there, especially Fitzroy who is so skittish of new things that he won't go in the cage for two days if we change the way it's set up. Well thank goodness for Ruby and Wiggle Worm. Worm ran through them in no time flat, and Ruby was soon to follow. Then I woke up one morning to this:

They both sleep in there now, either in this three way intersector or in one of the elbows.

Since the girls climb down to the floor when their cage is open, we have to lock them in sometimes while the boys get to stay out. I think they like tormenting them from above.

I never thought Fitzroy would go in there, but he totally loves it. I allways find him in there now!

This is how we have everything set up until we get the R695.
The boys aren't brave enough to run up and down the outside like Wiggy and Ruby, but they are constantly in there now. It was $30 well spent. I highly recommend them to anyone. They're pretty easy to put together and take appart. I don't know if they are dishwasher safe though. Has anyone else washed theirs in the dishwasher? When I got them I washed them in the sink with dishsoap and hot water, but there are too many of them to fit in there all at once. It was easy enough to clean and dry them though.
If anyone else has pics of their rats in tubes post them. I thinkthey look so cute poking out.