The answer to 'how to clean leak repair' is to thoroughly clean and inspect the area around a leak before attempting any repairs. Start by turning off the water supply to the affected area, then use a towel or rag to soak up any standing water. Use a stiff-bristle brush and mild detergent to scrub the surface, removing any debris, rust, or mineral buildup. Rinse the area thoroughly and allow it to fully dry before proceeding with the repair.
It's important to identify and address the root cause of the leak, rather than just covering it up. This may require disassembling the affected plumbing components to inspect for cracks, corrosion, or other damage. If the leak is in a difficult-to-reach area or requires more extensive repairs, it's best to call in a professional plumber.