Thank you, Ingrid, for reminding me about the vacuum bag. I have one sweeper, an Oreck lightweight that does use a bag, and I had stored it in the closet without removing the bag. The other sweeper I use is a Rainbow, which uses water in the collection bowl. It's great, and traps all the dust (and fleas, hopefully) in the water.
I just mopped all my hard floors with Pinesol. I've read it really helps. We shall see!
I haven't seen any fleas in the house today, and I'm so paranoid and watchful of them!
Patty