Here's one to avoid:
I bought those metal security boxes for my cameras. The box is screwed to a tree with lag bolts, then the camera is set in the box and it's closed with a top cover and locked in place.
Well 3 weeks ago, I set a camera near my moose hunting camp and yesterday I finally got up there to swap out the memory cards.
As soon as I opened my camera, I knew I had ZERO PICS on the memory card; cuz it was popped out. I checked it anyway, and sure enough there was a few pics of me setting it up, but that's all.
And I know why. When I was putting the camera in the box, it slipped and dropped down into the thing. I would never have thought that would be a problem, cuz it it's not like it hit hard, but that little bump was enough to make the memory card release.
So if you are using those metal bear proof boxes, DON'T DROP THE CAMERA IN. PLACE IT CAREFULLY. If it happened to me, it could happen to you.