Use mats with a smooth back . Spiked mats will damage hard floor finishes. The "Paperclip Test" for Carpet

Straighten a paperclip and push it through the carpet and padding until it hits the subfloor.

To determine the necessary mat thickness, you must measure your carpet's pile.

The backing of the mat is determined by the floor surface to ensure stability and protection.

Mark the point flush with the carpet surface and measure that length. Requires a standard thin mat. Medium Pile (Up to "): Needs a thicker mat with slightly longer spikes. High Pile (Over