Can I use Murphy’s Oil Soap on granite?
This is one where opinions genuinely differ, and it’s worth being cautious. Murphy’s Oil Soap is formulated primarily for wood, and while some people use diluted versions on granite without issue, several stone care professionals caution against it, since oil-based residue can build up a film over time, dulling the stone’s natural shine and potentially interfering with sealants. Granite manufacturers and countertop installers generally recommend a pH-neutral stone cleaner instead, specifically formulated not to strip sealants or leave residue behind. If you do choose to try Murphy’s Oil Soap, dilute it well, use it sparingly, and rinse thoroughly with clean water afterward. Testing an inconspicuous area first is a smart precaution, since results can vary depending on your specific granite’s sealant type and age.