Negative Positive
Title: Acrid smell!
Review: I opened the package and left the box in the house, to run the mat in the garage as another reviewer suggested. Later the smell from the box alone wafted through 3 rooms, and I had to put it in the garage. I left it running 12 hours, by which time my garage smelled absolutely awful, and the house was permeated just by opening and closing the door. I just had to unplug it - we couldn't stand it. I actually thought that maybe I had hit a skunk with my car, but when we unplugged the mat, boxed, and bagged it, the smell went away. It heated up really nicely, but there's no way to live with the smell. Maybe they use different rubber sources for different batches??
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