I have two hives that I started with swarms from traps last summer. Both consist of one deep and one medium. I inspected them both last Sunday and they looked good, with the mediums full of honey and the deeps with bees. I only removed the mediums and look at the deep from the top. For the strong hive I added a medium and for the other hive I replaced 5 frame of honey with empty frames to give them more room. I put the mediums back on and went home.

Well, when I looked at the picture that I took at home, I saw a few mites on the broken broods that was built between the medium and deep of the stronger hive. I haven't use any chemical and would like to stay that way. Is these few mites a concern?