Cooking grease, as well as fats and oils left over from cooking, should never go down the kitchen drains. Ever, if you can possibly help it! It’s unavoidable for some grease to go down the drains when you’re cleaning up, but if you have grease in a pan or skillet after you’ve finished cooking, don’t tip it over and send it down the kitchen drain.
We know this is tempting because it’s easy. And when you look at the grease in the pan, it seems harmless. It’s just a liquid that will wash down the drainpipes like water. But that’s not the case. There are ways to dispose of grease without resorting to the drain.