Waste of time. I had a guy come help me a few years back from another company on a hw job. He ranted and raved how well oven cleaner would work. I tried it and it did work, but no were near as good as a powder. Now the powered are good, but last year we bought some one restore. My employees came back ranting and raving about how amazing it is. Spray on, wipe off, spots gone. That easy. But the one did say she would have liked to had a mask as the smell was a little rough for her. Also she got some on her pants, bleached the hell out of them.
Sometimes its better to buy the product that is designed to do what you are looking to do. 1 gallon of oven cleaner on google is $40 to $60 bucks. 1 gallon of one restore $30 and change, diluted 2:1 your getting 2 gallons. We worked the whole year with one gallon. The cost is nothing compared to the customers happiness.