Once you're done with your cooking, the big question that remains is, what do you do with old cooking oil? Should the leftover grease be poured down the sink, frozen, or thrown away?
When you're done cooking with all types of fats, oils, or grease, it's recommended to freeze it and dispose of it. Regardless of whether you put soap along with the grease, pour it down the drain, or even use hot water on it, grease still sticks to the drain pipes.
Upon hardening, other debris and materials stick onto it. This leads to a backup on the private line as well as the main line, capable of disrupting a neighborhood. Overflowing grease that comes out of the sewer line, goes into the storm lines, and contaminates the lakes and ponds.
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The right thing to do is to put leftover grease in a can, freeze it, and then discard it in the waste. Alternatively, you could take the accumulated grease to a hazardous waste facility, like the KC Water facility which has a cooking oil disposal service that's open on Thursdays, Fridays, and Saturdays.
Hopefully, the next time you have leftover oil or grease after you're done cooking, you'll discard it the right way.
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