Using undiluted, harsh bleach or aggressive chemical solvents on a BLANCO SILGRANIT composite sink is strongly discouraged because it can damage the protective finish and leave permanent discoloration over time. However, for stubborn stains or sanitization, BLANCO recommends using a diluted solution of household bleach mixed generously with water, applied briefly, and then rinsed thoroughly with clean water. For daily cleaning, mild dish soap, warm water, and a non-abrasive nylon scrubbing sponge are completely sufficient to maintain the pristine appearance of the granite composite surface without risking chemical harm.
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