I know they wouldn't like this either, but have you thought of building a huge cage outside for them during the day so they can run around but still be confined.....kinda like they do in the zoos?

I know it is hard to keep any critter from doing what is natural to them. I even struggle with my doggie & his natural instinct as you might have read in some of my Kentucky wildlife posts. The poor little mole & the racoon present....then today when my friend got out his weed eater, he stured up a little rabbit.....my doggie was on his leash, but wow, through he was going to get pulled away from me to get that cute little guy.

Hope you can come up with some other solution that finding them a new home because they probably are very attached to you no matter what their wild tendencies are.

I'm sure some solution will come to you,
Debbie