I wasn't expecting much. I really just wanted something to get under the sofa and pick up dust and pet hair. But this thing has become like a pet; so i named it. He's a pup charmer (causing the pup to lie down by the back door), a cat toy, and does a pretty good job of cleaning up. Sometimes Dexter gets stuck, but that's to be expected. Dexter might feel embarrassed when asked to return to the charging port, but it doesn't take long to point him in the right direction. Dexter likes cords and stuff like that, so get them. If you don't want Dexter to go anywhere, block him. As long as Dexter lives (and works) a long, happy life, I will be a happy customer. So clean his charging ports, his filters and untangle the hair he collects.