Robot vacuums vs fringe carpets: Robot vacuums lose badly on fringe edges

Robot vacuums handle low-pile carpet fine, but fringe edges are a disaster. The spinning brush and drive wheels pull fringe in, causing tangles, error stops, or carpet damage. Higher-end models like the [iRobot Roomba](https://www.amazon.com/s?k=iRobot+Roomba&tag=wehavethat-20) j series detect fringe better but aren’t perfect — set a no-go zone or vacuum edges manually.