Bests & Worsts Reviews from Amazon

I really didn't mind the smell (although it does have a really strong rubber smell), and it also didn't stay put very well and had some flaws in three of the corners, but the fact that it did not lay flat was the main reason I am not happy with it. It was rolled up for shipping and has not recovered. I tried everything, i.e., reversing it and putting it in the sun, but it still won't lay flat making it a trip hazard. I read another review stating the same thing and I probably should have paid attention to it before ordering.