Good chair mat works with worn carpet my carpet is almost to the bare floor and it sticks very well. I wish it could be a little larger by 2 inches all around but OK so far.
Nothing like trying to scoot around on your desk chair on carpet. NOT. Using the heavy plastic desk mat that anchors into your carpet without harming it saves the day. I can scoot from in front of my screen to the filing cabinet to the supply drawers with ease.
Spent the extra money because the first one slid all over the floor. This one isn’t any more stable and the teeth to hold it in place on the underside aren’t any deeper than first one.
Took some time before we found the right mat to sink into the carpet but this one did the trick. And my hubby’s chair just glides over it no problem. If anyone out there needs one this is it!