I had a moultrie out in west texas for 3 seasons and it worked fine. Brought it home after that 3rd season and set it up in my back yard. I had 3 pictures of deer after 3 months and just figured it was due to very little action.
Ended up getting a new camera for christmas and after setting it up had 200 pictures in 3 weeks time at the same location. Long story short the moutrie was working, but not as it should. I think over time the sun fades the screen and thus it takes fewer pictures as it gets less sensitive