You should always use cold water when running your garbage disposal. Cold water keeps fats, oils, and greases solidified so the disposal's metal impellers can chop and shred them into tiny solid particles that wash safely down your drain pipes. Conversely, using hot water melts grease and cooking oils into a liquid state, allowing them to flow smoothly into your pipes before cooling, solidifying against the pipe walls, and creating severe plumbing clogs. Verification: Turn on the cold water faucet full force for 15 seconds before and after grinding food waste.
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