Vinegar:
1- Combine a litre of water with half a glass of vinegar.
2- Mix and pour into a spray bottle.
3- Spray the solution onto the burnt oil stains.
4- Scrub the area with a sponge and rinse.
Salt and Baking Soda:
1- Fill a bowl with equal parts coarse salt and fine salt.
2- Add a little hot water and knead to form a paste.
3- Apply the paste on the stains and let it sit for an hour.
4- Scrub with a sponge soaked in water.
Lemon:
Method 1: Cut a lemon in half and rub it directly on the oil stains. Rinse with white vinegar diluted in warm water.
Method 2: Extract the juice from 3 lemons, pour it into a bowl and place it in the oven at 180 degrees for half an hour.