Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Do not use oil sprays and high heat

I really enjoyed cooking with all my Infinit Ciculon Cookware. After about 1 1/2 years of use, my 8" and 10" frying pans sticking bad. I went to the Circulon website under the FAQs and found"Why are my foods are sticking?" and read. Do not use spray oils on frying pans because the oils burn on a lower temperature and do not use high heat. If you use spray oils or high heat, you would void your lifetime warranty, Bummer!!! BEFORE YOU BUY, READ THE USE AND CARE, AND Warranty.