I been having difficulty getting rid of poison oak off my porcelain kitchen sink. I've tried Technu, Ajax, Dawn dishwashing detergent, rubbing alcohol , baking soda, and TSP(Trisodium Phosphate) on my sink several times and I still get re-comtaminated. Can anyone helped? I'm so frustrated, I'm at the point of telling my husband we need to take out the sink. |