Funny story for you. Every year a group of us get together in the fall for a party. It's after the harvest and hunting season for a big cookout. About 5 years ago it was my turn to host it. It was kind of a pot luck, some people came with their BBQ, some with salad, beans and whatever. There was 3 of us that had those big outdoor turkey deep fryer things. In mine I made french fries. Someone else deep-fried a wild turkey and another was walleye and pike.I need a tee shirt that says "Feed the Pile". I think that is basically all I am doing.
To make a long story short we were all half cut and no one wanted to bother waiting for the cooking oil to cool down and pour it back into the containers. So I said let's just dump it in the garden. Well, several gallons of cooking oil dumped at the side of my garden lol. It took years for that to recover. Each year when I would till it the soil in that spot was almost like a cross between playdough and connetic sand lol.
No real point to my story but lesson learned, even though I consider cooking oil to be organic I would never do that again.