These mats are amazing!  We have 3 indoor/outdoor dogs and live in sandy land, and the difference between sweeping the house with the mats everyday is drastic, especially in damp, wet weather.  I purchased three and placed 1 inside my entry door, and one inside and one outside the dogs' door.  The dogs' feet touch the mats coming and going, with great results of catching any debris.  I haven't had them long enough to wash them down with a water hose, but feel like that will be easy with great results.  I just sweep them off or vacuum them once a day.  I would most certainly purchase these again and would highly recommend  them.  One more thing, Wayfair's price was cheaper than others when I compaired.  Love them!!!