Self-cleaning ovens will use high temperatures to burn away food leftovers without any need for toxic oven cleaning chemicals. A self-cleaning oven has an enamel coating on the inside walls which makes it easier to burn off heat and ash with high temperatures. A self-cleaning oven has a cleaning cycle of around 2-4 hours, during which time the oven gets to work at 900 to 1,000-degree heat, removing baked-on food residue that’s collected over time.
As you can imagine, the heat required for a self-clean to successfully burn off thick layers of grease, fat, and grime can produce a pretty powerful smell - so be warned! Also bear in mind that the fumes self-cleaning ovens emit can be dangerous to animals, so keep your pets well clear during the cleaning process.