well sometimes if soils left in a warehouse on the ground for example sometimes bugs will chew there way into the bag and get in the soil,sometimes they will lay eggs,,,,,if you only have seen 1 and youve seen none in the soil and no eggs,,then they should be ok,so no need to move um!in the soil i bought i found a few little yellow eggs but some had dried out and nothing hatched from the other ones,,,i actually sqeezed one coz i thought it might be a little plastic pellet and the thing popped and squirted puss in one of my eyes lol