Instruct: Classify Amazon reviews into positive or negative sentiment
Query: ruined my new oven

Regency spilmat oven liner. Used this in my brand new $6,000+ oven. First 2 times it was ok and then the third time it melted a 10 inch diameter spot onto the bottom of my oven. Oven temp was 375*. It stuck and had to be yanked up and soaked to get it up. Bottom of my oven now has a huge spot that looks damaged. DO NOT BUY THIS unless your oven is worth risking.