Hello There - I've only had my Roomba Discovery for about 10 days but so
far I am pleased. It's managed to charge itself and I really haven't had
any problems. I don't know how it finds its charger, I'm afraid, but am
happy it does.
I do know that it finds dirt through sound. It listens to the particles
hitting it while it vacuums. Lots of noise means keep vacuuming, little
to no noise means that area is clean. I thought that was pretty
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