Purchased the large mat in “Evergreen” to go inside my garage at my main entry door.  I haven’t had at for long, but as of this date, it seems to be much better than the straw-type mat that was there previously.  It appears to catch the dirt, grass, etc due to the raised texture of the mat. As for cleaning it, I have not tried to vacuum, but sweeping off the debris with a broom seems to do the trick.