I have had my hives for just over a month now, but have never checked the bottom brood box since adding another box. How often should I check it? I also want to know how people go about doing hive inspections when there are multiple boxes. I was reading something that said to start from the bottom up, inspecting each box while it is off the hive and then placing it back on the hive after inspection. Is this the best way? How often should one do this full type of inspection?