Use this stuff: https://www.amazon.com/Cooking-Solidifier-Hardener-Powder-Solidifies/dp/B09C3XR7H8/ref=mp_s_a_1_4?crid=1VR0IKI13RRWU&keywords=cooking+oil+hardener&qid=1669754610&sprefix=cooking+oil+%2Caps%2C170&sr=8-4
It hardens the oil so you can dump it in your trash