What are the 3 ranges of dirt-repellent mats?

There are 3 ranges of dirt-repellent mats:

• Scraping mats : Scraper mats have dry, hard fibers for effective scraping of shoe soles. Used in dry, dusty environments.

• Absorbent mats: Absorbent mats absorb moisture brought in by passers-by. Depending on the mat, they can absorb 3 to 6 L of water per m2, and are known as water-barrier mats.

• Non-slip mats: Anti-slip mats also have a scraping function, preventing dirt from entering the premises. However, they have one more function than scraping mats: they have anti-slip properties. These mats are most often used outdoors.