I have three cats from the humane society. I've changed the furnace filter and brush the cats once or twice a week. I'm thinking about buying a Roomba remote type vacuum. The fur is On the floors, on the kitchen counter tops, floating in the air, and on my clothing. The vet said it's normal and just a trait they were born with. Can you suggest a vacuum or air cleaner that will suck the fur up & out of the air?