This is how you can clean your oven quickly and inexpensively

Ammonia
Ammonia may not smell nice, but it sure works well! With this agent, your oven will be clean in no time and with little effort. Put the oven on the highest setting for a few minutes. Then turn it off and place a pan or dish in the middle of the oven containing a generous dash of ammonia. Leave this pan or dish in the oven all night. You can wipe away all the dirt and grease with a microfiber cloth the next day

Lemon
This also works really well and smells wonderfully fresh! It works about the same as above, but you use lemon juice instead of ammonia. Pre-heat the oven to the highest setting. Fill a pan or dish with a layer of water. Add the squeezed juice of an entire lemon and put it in the oven. The heat causes the water containing the lemon juice to evaporate, which easily dissolves all fat residues. Leave the dish in the oven for about 25 minutes. You can then easily clean the oven with a microfiber cloth.

The job is done. No need to clean for a while. Make sure to quickly share these tips with other households!