I'm sure it depends on the dog's hair, our dogs shed short ~1/2 inch long white hairs that end up all over the place. The Roomba (some mid-range $300 unit) run

I'm sure it depends on the dog's hair, our dogs shed short ~1/2 inch long white hairs that end up all over the place. The Roomba (some mid-range $300 unit) runs every other day (one day downstairs, the next day upstairs) and does a good job of getting the hair out of the carpet. The bin is always full of dog hair and lint. It hasn't completely replaced the regular vacuum, but we can run it much less frequently (like every other week instead of every other day).