My Roomba for whatever reason cleans really really well, but so keeps a wad of dog hair underneath it, that it "pukes up" anytime the terrain changes. It came into my office and it was making a weird sound so I flipped it over, low and behold massive wad of dog hair. The damn thing then told me to empty the bin. You drive to your station and empty the bin.
I sent a rant video to a few of my friends and one of them said "it's like an additional pet"
I now have a forth pet Olaf the Roomba