I really like this mat. It is heavy duty, & looks great in my entry. But when I opened the packaging, the rubber smell (like new car tires) was overwhelming. I kept it outside for 3 days to air it out. On 2nd day, I hosed it down & washed it with Simply Green & let it dry. On 3rd day, the odor was reduced, but still strong. I mixed 2 cups of vinegar in a bucket of water & added a couple of squirts of dish detergent. I then poured this in the mat (both sides) & let it soak for an hour before I riSee full review