The other night I decided to do a check for mites in the coop. I saw what appeared to be gnats and a few red mites on the "poop shelf" under the roosts, but none on the roosts themselves. When looking yesterday they were all still on the shelf, in broad daylight. Now this morning I saw the "mites" on the ground in the run when I moved the waterer. Are these mites or something else? Would they be out during the day? They just look like little red dots crawling around. I've put DE in the coop.