Charlie, if you're working on something like this it is the kiss of death to offer observations like

There's no way the bandito gang can make their way in

That just gives them something to work toward. Consider yourself warned!

Here on the creek where I live we have rabbits, racoons, oppossums, coyotes, foxes, and lots of other critters that come by less often. The cats stay in because the street has a steady trickle of traffic and the area's wild residents are frequently in view.

Have a good time in the Pacific Northwest. And while you're there, ask Bob Nelson (Deckman) to show you his cat enclosure. It is innovative and is another possible answer to the problem you've been having.

SRS