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I don’t know. The s9 has is my first roomba and I chose it because of its ability to handle a variety of flooring. The s9 is working great in my home. I have hardwood, thin carpeting, thick carpeting, area rugs without fringe and it navigates well on all of the surfaces without incident. My one area rug has a dark brown border and it does fine.
Sorry, there was a problem. Please try again later.While all robotic vacuums struggle with completely black floors, the s-series (s9 or s9+) include an extra sensor that solves this issue
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