brilliant idea ... well done ... but far from perfect

the many good reviews, which I can connect to a large extent, have made me curious and I have the Roomba for our 75sqm apartment (3rooms) ordered and tried with great enthusiasm.
The navigation in the 3-room apartment worked well without lighthouses. I had first tried out operation without Abgenzungen, because we have a 10-month toddler, before its hands nothing is certain ... the lighthouses would be so kind to fix close to the ground, was too expensive for the Testpahse.
The cleaning performance is ok, but the Roomba is more suitable for the collection of small loose Gegensände such as breadcrumbs than the actual vacuuming. With a real vacuum cleaner, he can not keep up entirely, as regards eg the thorough cleaning untem sofa, here is after several Roomba crossings still normal dust present.
It cleans carpets overall good ... probably because he was probably developed for American households with these typical high pile carpets ... the carpet acts like "brushed by" afterwards.

The concept is super, real impressive, but when Conclusion can be stated that a Roomba most suitable for a household, accumulates in the day for a limited amount of loose dirt, such as pet dander, breadcrumb or somehow purely towed Small dirt ... Then it can represent a major workload.