Do stitched edges on mousepads fray over time?

Yes, they can. Stitching helps compared to raw rubber edges, but it’s not forever—thread will eventually wear down and unravel after thousands of hours of use. To prevent fraying, don’t pick at the stitching, don’t fold the pad, and keep your desk clean. For longer life, get a mousepad with a hemmed edge instead of just overlock stitching. Otherwise, just buy a new one when it frays—it’s a cheap consumable.