It doesn't. The idea of the cleaner is that it reduces the overall level of dirt in your house. Its a "maintenance" cleaner as it can just continuously clean.

It doesn't. The idea of the cleaner is that it reduces the overall level of dirt in your house. Its a "maintenance" cleaner as it can just continuously clean. Therefore the buildup of dirt in the corners will be less as there is less dirt around generally. However you will still need a secondary vacuum to do the corners, cobwebs, stairs etc. Its aimed at people with plenty of cash, who might not blink at having one per floor of their house.