On that Deer and Deer Hunting show on the Outdoor channel today they had a so called "Pro" deer cam person on there talking about how you should check your camera everyday and blahh, blahh, blahh. He checked his camera on the wheeler, then drove back to the house, changed batteries and film, then drove back out and set it up in the same spot and said he would do it all over tomorrow. I found it quite humerous. Anyway, I like to give them 5-7 days based on location and accessibility.