Before Sentinel Safe Floors came in to treat our hardwood stairs, we would routinely have near slips and occasionally actually slip down. Our grand-daughter slipped on the stairs once, luckily, she didn’t get hurt. We had to stop it. Now, after the treatment, I’ve actually tried to slide my foot over a stair to see if it was even possible to slip. I couldn’t! I used to dread people going up and down those stairs, but now, I love my stairs!