hi , it dependes on how bad the oven is, I would go for industrial type brillo by johnson diversty to give you an idea i would use one trigger spray bottole on four industrail ovens with baked on grease would last two days/two seperate jobs ,wire wool plus scraper and i would go with a steamer if you think it will make the elbow grease easier. if you got it, use it, do what it takes to do the best job