Maybe my eye sight just isn't so good, but our house is all hard wood floors on both floors and I almost never clean them! I sweep once in a blue moon, and maybe once a month (or once every 3 months) I vacuum up some decent sized dust bunnies from behind the doors and under the beds, but the floors never look dirty. I've spot cleaned spills (3 kids) with a wet rag, and except for the kitchen and bathrooms, I've NEVER wet mopped! In five years! Just swiffer dry mop, broom, or vacuum. It's not good for wood to have all those cleaning agents and water on it, and it doesn't need it.
I thank my stars every day we don't have carpets to vacuum. But we do have some smaller throw rugs I shake out once a year or so :) But for real, our house is very tidy.
Are you sure your floors look filthy all the time? Is your house flooded with super bright sunlight? Is your decor super clean and modern with high gloss floors? Our house is old, and the wood floors are sort of natural and neutral, so they look fine all the time. You can't see dirt unless they are REALLY dirty. I'm thinking you may be imagining they need more cleaning than they do...but again, I'm pretty laid back about house work. I would just vacuum up the cat hair, wipe up the spills with a damp rag and then quickly dry them, and tell people not to traipse in so much mud. Someone just asked me the other day if we had the floors newly redone. Hardly!