How to Dispose of Used Oil After Frying? Frying food at home can be a rewarding experience, but it’s important to properly dispose of leftover oil. Read on for the ways to get rid of used cooking oil responsibly. FryAway Cooking Oil Solidifier is a new product that makes oil cleanup safe and easy. After frying, turn off the heat source, remove food and stir FryAway powder into the hot oil. Allow the oil mixture to cool down until it has solidified and scoop the hardened oil into the trash. Visit our website to learn more.