Tiny black bugs in terrarium.

[Paul Mc]

OK, so I know I have a few fungus gnats in my terrarium but after I introduced two carnivorous plants I noticed that the population dwindled to almost nothing.

However, today I noticed really tiny (needle point sized) black bugs crawling all over the place in there. They are so small I can't even really see them or get a picture. I just see them moving around and climbing on plants and stuff.

They do not fly when I swoop in to squash them though.

Do you guys have any ideas what they could be and how to solve the persistent issue of bugs in there?

I was using some bacillus pellets (sp?) in my handheld spray bottle but took them out after a while because I was fearful of too much chemical buildup inside the terrarium. Was this a good assumption to follow through with or was I wrong?

BTW, the two carnivorous plants I got were specific for fungus gnats and I do not see any of the new small bugs trapped in their leaves.