I haven't found a reasonable solution for multi-level dwellings; interested in how others address this. If you just have 2 floors, it's reasonable to purchase 2 of these bots; but if you need a third, it starts to feel excessive. In something like a townhouse, with several floors that are individually not that big, for example. Not to mention I still need to clean all the stairs manually, and those are by nature high-traffic. Do folks move their bot to different floors weekly, or something like that?