Oven fires can start from many different sources, some preventable and some not. The preventable ones are the ones you should keep in mind, as there are steps you can take to try and make sure they don’t happen. Stray food scraps often start preventable oven fires in the oven and excess grease from cooking foods that use a lot of fat and oil. Both issues can be prevented by regularly cleaning your oven and ensuring there are no stray food scraps at the bottom of your oven before you cook something. Sometimes fires start because things not meant to go in the oven are accidentally left there. These are usually oven mitts or dish towels and rags. Remember to never leave anything unnecessary in your oven, whether you’re using it or not at the moment. Malfunctions in your oven can happen at any time and are not caused by issues on your part. However, if there is a malfunction in your oven, make sure you contact a professional kitchen appliance repairman and have them inspect it.