Floor-protection mats keep floors clean and protect them from damage caused by dirt and traffic. Floor-protection mats for hard surfaces absorb moisture to help keep floors dry and protect floor surfaces from damage caused by traffic grinding dirt and debris into the surface. They have a smooth backing to lay flat on hard floors. Floor-protection mats for carpeted surfaces reduce wear to installed carpeting and protect carpeting from damage caused by spills, wheeled carts, and foot traffic. They have small nubs on the back to hold the mat in place. Interlocking floor-protection mats are assembled to cover a large area or to suit a custom configuration.