I'll give my opinion on this product because many are skeptical about its effectiveness.
First of all, I think it is not done for manic household. Indeed, it maintains the soil daily, but there is still some mini dust after its passage. It is also a bit brutal when it passes near furniture (it slows down, but the bangs hard enough). I advise to watch him work the first few times to move the troublesome obstacles or to place the terminals. Also according to my feelings, I think for homes hairless animals, this device is not so useful. It sucks a lot less than a traditional vacuum cleaner: I would assimilate a broom rather than a vacuum cleaner (although it sucks a bit). A little everywhere with the side rotating brush it sending dust (most annoying is when he sends them under very low furniture). He returns repeatedly to the same place, and fortunately, otherwise he never would pick it sent everywhere.
The positive:
Contrary to what I read in the forum, I do not find that the noise is annoying !! It is quieter than a conventional vacuum cleaner. Maybe a little less strong than my hairdryer. So it is sure that it rotates in the living room for 2 hours, it will end up annoying me, but it's bearable 20 minutes,
The possibility of the program is a lot more that have not. It can be programmed at different times on different days of the week. I fit my schedule.
It mounts easily on carpet, and even on the door stops. Roomba also be fitted on the electric cables without dropping lamps, and unravels easily.
He finds his base every time.
Insists well on dirty places (but as I mentioned above, the overall result is not perfect).
The capacity of its tank is acceptable. HEPA filters are essential to me. The ferry is better designed than some earlier versions (when opened it is no longer falling dust).
People often told me that working time is too long compared to its competitors. Yes, but Roomba picks up more dust !! He returns repeatedly to the same place to the finish. His random mode helps to cover the surface, especially if the room non-rectangular shapes.
To conclude, I would definitely suggest the Roomba if you have pets. Instead, I recommend it for those who are forced to leave the vacuum cleaner EVERYDAY. Similarly, I think this brand is the most reliable in terms of efficiency and sustainability.