Grease is a necessary product used in so many foods made today. It has a tendency to cling to the pan long after it's needed and exceed its usefulness. Regular washing won't touch this stain so special measures will have to be taken. There are many different ways to remove burnt grease so there's no need to panic if cleaning up after dinner isn't going as planned. In no time at all, burnt grease can be removed, leaving pans as though the grease was never there to begin with.
Fill the pan with very hot water. Place two or three dryer sheets in the water and allow it to sit overnight. By morning you should have no trouble scrubbing the pan free of grease with warm soap and water.
Spray the pan with Easy Off (or a generic alternative) oven cleaner and allow it to sit overnight. Wipe the grease away the next morning with paper towels and wash as usual.
Make a paste of equal parts baking soda and water and coat the grease with it. Allow the paste to sit on it for at least 15 minutes. Scrub the grease away with a clean cloth dipped in hot water. The baking soda will act as an abrasive. Wash the pan with warm soapy water.
Pour enough vinegar into the pan to cover the grease and bring it to a boil. Allow the vinegar to boil for at least 10 minutes before pouring it out and scrubbing the pan with an SOS pad.
Heat up the pan on the stove until the grease becomes liquid again. Remove from the heat and pour cold water into it. Scrub the pan with an SOS pad and wash with warm soapy water.
Be careful of dry scraping the pan as this may leave permanent scratches on it.