At least the adhesive backing is worthless on smooth surfaces.
The only thing i don't know is how long the felt bottoms will last. My hunch is that they'll last a long time. Much better than the 3m alternative that is priced much higher and doesn't even hold up a month.
The only con is that the screws are not very deep and it is hard to get the right philips driver to not strip out the head. The only thing is that you should drill a starter hole to protect the legs.
With jute rugs, the small felt pads get trapped in between the fibers. The issue is where the laminate floors meet the tile.
A mix of reliable and unreliable reviews. Please check reviews carefully
Reliable reviews you can trust