I've found some mites here and there in my Messor colony, although I have never spotted any of them on the ants themselves. They seem to hang out around in the outworld and near where the colony disposes of thrash. I kill those I can by removing food etc, but I wonder if they do any harm or if they simply aren't that kind of mites? I also can't tell if theres any size difference, but they all look very small.
I know I can set fruits around and remove them, but if they only eat garbage - would there be any harm?