little white flea looking sob

What do i have? I was digging around a new seedling and found a small, white, flea-like creature in the soil. What kind of mite and will it affect my more advanced seedlings two weeks older. I removed the infested one. I'm using brand new soil fresh out of the bag. WTF! My room is clean. What to do?

could be a whitefly

agree with pueblood ^ but with out pics..??? how big is it?

get Diatomacious Earth, it will kill critters in your soil and is totally organic.