Stall mats? Info, use, opinions?

theyre great! my farrier tells people to use them especially in summer when the bugs are biting at the legs and causing the horses to stomp. the rubber helps so the hoovs arent smacking the ground all the time. we have pretty big stalls at my barn, and my boy has 4 rubber mats in now :) spoiled thoroughbreds.... :D anyways, i would highly suggest getting one, they even out the ground, and help with healthy feet!