Tiny white bugs in bark

[kalanchoe]

Hi Orchidboard!

I've noticed these itty bitty white bugs crawling around the bark in my orchid pots. I don't see them in my sphagnum moss pots, and I don't see them crawling on the leaves or flowers. I haven't detected any damage to leaves or flowers, either. They crawl around pretty fast all over the bark pieces, and there are white specks stuck to the inside of the pots and bark.

Any ideas about what these are? My main concern is that they might be munching on my roots! I haven't de-potted any to investigate, but the roots I can see through the clear pots seem fine. The plants don't seem to be suffering for it (yet?).

I'm an optimist, so I'm hoping these bugs are somehow benign or beneficial! If not, how can I get rid of them?

Below, the zoomed-out photo shows the many little white specs that are stuck to the inside of the pot. Those aren't the actual bugs, but seem to be bug-related. The bugs are similar in size and color to the specs, though. I've zoomed in on one of the bugs in that picture to show more detail. The pics were taken right after I watered, so the medium is kinda soggy, especially the rice hulls. The medium is only a few months old.