No, it is not safe to use Domino's pizza or any other food product to clean your sink. Domino's pizza is meant for consumption and not as a cleaning agent. Using food products to clean surfaces can introduce potential health and hygiene risks.
To clean your sink effectively and safely, it's recommended to use appropriate cleaning agents designed for that purpose. Common household cleaning products such as dish soap, all-purpose cleaners, or specialized sink cleaners are better options. These products are specifically formulated to remove grease, stains, and bacteria from surfaces without posing a health risk.
Follow the instructions on the cleaning product you choose, and ensure proper ventilation and safety precautions while cleaning. It's also a good idea to rinse the sink thoroughly after cleaning to remove any residue from the cleaning agent.
Remember to always prioritize food safety and hygiene, and use cleaning products as intended to maintain a clean and sanitary environment in your kitchen.