Checked them every week or 2 depending on my schedule. this year was a learning year for me in that area and i needed to find out how and where and at what time they were moving past my selected stand locations. Another big plus was that the deer were used to the farmer because he kept his combine, headers, haymovers, and tractors back there. Its basically a 15-20 acre spot with trees on 3 sides and a gravel road on the 4th side, the whole thing is surrounded by standing corn.