there is no suction, so it's amazing how much dirt, lint, etc, ends up in the dirt bin.
it does not have a vacuum for suction, but its brushes do a great job picking up sand, dirt, dust, crumbs, hair, screws, etc.
one of the few drawbacks is the fact that it is quiet due to a fairly low power suction motor.
this little thing does not have suction instead it use wiping/brooming for cleaning.
granted, the limited suction and capacity of the roomba does not make it a replacement to my dyson, but it comes darn close.
the suction is not as strong as an upright, but the unit will cover most areas several times - and after several times, it will pick up as much or more than most uprights.
this usually happens long before the bin fills up so we still have to clean the filter after every usage to maintain maximum suction.
it won't pick up everything, and doesn't have near the suction power of a normal vacuum cleaner, but leave it alone for twenty minutes and it does the job.
where it lacks in power and suction, it makes up for it in room coverage.
i burn through vacuum cleaners on a regular basis...by third use.....i have burned ou the motor or the suction is gone.
the first few times of use i had to wind up lamp cords,etc, any thing that the machine would suction up.
the only problem with his cleaning ability that i can see is that the suction motor is not strong enough to clean deep into your carpet.
not too much suction but it runs over the same area several times and in the end, gets up more dust/dirt/hair than i would normally get with a conventional vacuum.
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