Origin and Mitigation of Springtails? in a well cleaned and active in and out air with filters on each side prevention help.

I experimented with flowering in one gallon pots of coco and perlite. I see a lot of spring tails show up when i water. I have never seen this in my grows, I clean my grow area before a new grow. I used fresh coco and perlite. Where did they come from? how do i prevent this?