These are tiny bugs that jump but are so tiny it hard to describe them. Help!

If they jump you need to rule out fleas first. If no one is being bitten I would suspect a type of fly that lays its eggs in the build up along the sides of drainpipes. Their proper name is "phorid flies." There are drain cleaners that use enzymes to remove the build up in your pipes. Try the cleaners as they can take a while to work. Catching one or three on a piece of cellophane tape and then taping them to a white card will give you a sample you can take to have identified. The biology department at your nearest college could i.d. them for you, as well as the office of a large exterminator, or, if you live in the States, your county Agricultural Department office can get you a contact.