I bought one when I moved from a rural house in France to a retirement flat in the UK ....ha ha ....it's never been out of its box....I stayed with friends in Germany who run their own computer business from home ....they have one (in fact the whole house is technically operated ....from the window blinds, doors, lighting, coffee machine etc ! BUT it ate all the computer wiring .....since they are clever they re programme it as to avoid these areas ,,,,,,,,,,,,,,,but sadly mine will have to stay in its box as I have so many obstacles for it to manouvre
round ! I bought a Shark stick ....much better for me !