Look like a shit fly, or I think some people call them "drain flies". Never seen them be an issue for growers
I'm pretty sure my butt crack isn't the issue...After googling drain fly, I think we have a winner:
en.wikipedia.org
How Did I Get Drain Flies?
If these flies are present in the house there is almost certainly a slow or clogged drain. Drain flies gather, mate, and lay eggs in moisture or standing water. The slimy film that forms in sewers and drains is a favorite breeding spot. Putting off regular cleaning and maintenance of these areas may attract the pests and offer them a place to feed and develop.
Entry
These pests are particularly likely to be found in bathrooms and kitchens, typically getting into homes through:
How Serious Are Drain Flies?
These pests are a nuisance because they infest in large numbers. Once inside, drain flies may plug pipes and spread bacteria from the filth they live in, possibly contaminating food in the process. These pests, even though they live in filth, are not known to spread any disease to humans.
They are located next to my sump pit in the basement. That picture is the drain pipe coming out of the pit. I just assumed they were living in my soil. I think I can pour gasoline into the pit and burn them out.