I used these around couches in our house that had all wooden floors.  After our 1 year old got up on the couch and underestimated the ability of one's relatively large head to pull one's relatively small body right over the armrest, and I healed after making a diving catch just before said head hit the floor, we decided there was a better solution than carpeting the whole house.  These are big mats, so we put one on the fall-prone side of the sectional and one running the length in front.  They paid for themselves in saved medical bills at least a dozen times, and instead of tears we ended up with the laughter of a kid who came up unscathed from an epic tumble.  Since you can also just pick them up and move them to whatever new perilous perch your child has found, they end up being much handier than expected.