If you have a self-clean oven, the instructions say to never use oven cleaner
something to do with the residue left behind and the high heat from the self-clean feature. I have been using self-clean ovens most of my adult life (and I am 67, I have found them to be very safe. I've never had a problem. Of course, I would never leave my house with the self-clean feature running. The first one I had, I stupidly left the oven racks in because I was too lazy to clean them. It ruined them forever. Now I give the racks to my husband (don't wait until they are really bad), he sprays them and then uses the power washer. They come out just like new!