How to clean caulking turned black between SS sink and quartz counter
I have a stainless steel sink installed in my kitchen. It is not a drop-in sink but installed underneath the quartz countertop. I noticed that the clear caulking the contractor used has turned black in certain areas where water is always present. Is there any safe way to clean the black stuff off the caulking without damaging my quartz countertop or stainless steel sink? I’d hate to think I have to replace that caulking only after three years of use.