My neighbor had that problem. She put hers in a homemade box (couple shirt boxes) she made. She spread a layer of baking soda on the bottom, then placed the mat on it then spread another layer of baking soda on top of it fully covering it. Carefully slid it into a lawn leaf bag and let it set til the smell went away. Only took her couple days. brushed the baking soda off and wiped down with a micro-fiber cloth. No dampening by wiping down with vinegar. Just wiped and no more smell.