Those are fungus gnats. I got those fuckers too. They came with some bagged soil I bought last year and won't leave. I think it was a bag of Shultz, but I might be mistaken....It came from Canadian Tire anyway.

They don't seem to harm plants, but I still don't like them living in there.

I bought some sticky traps and that seems to have them under control but they won't be gone completely.

These are bright yellow sticky strips that you are supposed to attach to these plastic sticks that come in the package. You put the little stick with the sticky strip at the base of your plants.

But I instead cut the strips into smaller pieces to spread them out more and just lay it on the soil in the pot. On these strips, only 1 side is sticky.

I also put a few pieces on the floor beside the pots to catch the little fuckers running around on the ground.

Don't step on one...it's really gross getting the gummy dead bugs off your foot.