Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Use these if you want your baked goods to taste bad

My wife and I were very excited to find silicone baking mats that were rated up to 500 degree. I like to bake my biscuits hot, and most baking mats are only rated up to 425. We purchased four of these. Two as a gift, and two for us.Well, I couldn't be more disappointed. Since we got these two months ago, we've baked mulitple batches of biscuits, cinnamon roles, cookies, and rolls and everything is imparted with a distinct chemical flavor. It's kind of soapy, but even after we wash with just hot water instead of using soap.These are a terrible disappointment. Do not buy these. We'll just have to put up with are other 425 rated baking mats until the world comes out with something that works.