I had been using conventional oven cleaner for years and then discovered the way my granny probably cleaned hers. It's a tip for young people and some old like myself who got stuck into the habit of thinking you have to buy everything. It's the best way to clean out the oven. I think it's a no brainer to use natural ingredients in something you use to cook food. And it works so good on my oven. It even cleans and freshens the washing cloth you use to clean it with so you can reuse that again.