I am really starting to become concerned for your mental well being over this FLEA thing you've got. I don't (or care to) know much about the pests other than they ARE pests and if you have pets, it can be a real issue.
Can fleas bite a human? Do they spread disease? Can they get in your hair? Do they jump from your pet on to you in the middle of the night when your fast asleep? Are they in the wood work? Nah, they call them termites. I have to end this as I am now starting to itch!