Springtails, soil mites and the odd earthworm turn up in living soil and quality potting mixes, and new growers panic and drench a healthy indica seedling in pesticide over them. Springtails eat decaying matter and fungus, pale soil mites mostly do the same, and neither touches living roots. A field guide to what you might see in a cup, with photos and a split between leave it and deal with it, is posted on https://kushindicaseeds.com. Fungus gnat larvae and root aphids are the ones that matter.