Not an attack on you (But maybe on the "some" you referenced) :
Isn't every hide cause for "someone might see a ______ and go tear it apart thinking it's a cache"? Someone might be walking past a fallen tree, and think there is a cache. Someone might see a bolt in a sign and think it's a cache. Someone might see an ammo box with ammo in it and think its a cache. someone might see my mom's excellent Tupperware collection and rip it apart thinking there might be a cache. If anything, better hints or descriptions are probably needed. Don't take the hints or descriptions with you? Maybe you should start. A notebook is cheap.
/rant
I think this is a great cache idea. Don't let the "someone might rip apart a ____" argument stop you. I've found a few of these, one was a micro "corked" into the bottom of a false house, the other was a hinged, but sealed up house. Neat hide, lots of space for trades, and what muggle digs around in bird houses? Probably only the kind that would be interested in geocaching anyway!