As part of my natural pest management, I am using IPM bottomboards in my hives. These grid-marked plastic boards slide beneath the hive's screened bottom board. I coat them with a thin layer of vaseline and then check them after a period of time to see how many mites have become trapped. It is suggested that you check the IPM boards after 3 days have passed, count the mites and divide by three for an accurate varoa mite count. Because the previous week had been so phrenetic with construction issues, I did not get back to check my IPM board until 1 week had passed. I found a few mites....but not many. The white arrow in the next picture points to a mite. They are visible with the naked eye...but too small for my camera to adequately focus upon. Most of the other markings on the IPM board are from pollen and debris. I will clean off the boards, re-vaseline them and check them again routinely to keep an eye on the mite problem. If I see an increasing trend in the mite count I will turn to other measures to help control this problem. Mites are a part of beekeeping....especially if you elect to practice natural beekeeping (without chemicals). As long as mite counts are manageable, I will consider this practice successful.