Nothing is more difficult than removing the grease from the oven, especially if you don’t clean it very often. In time, on the oven are formed a few grease layers that requires lots of time to remove them.
If you want to stop using chemical products that harm your hands and eyes then choose the natural products instead.
First of all you have to take a clean cloth and soak it in hot water and wash the entire oven. Then prepare a paste made of baking soda and water and apply it on the whole oven’s surface. Let it act overnight and rinse it with water the next day.