Removing yellow stains from a white countertop
We have a problem removing yellow stains from a white laminate countertop. They appear under the drain board and coffee maker so heat and moisture must be contributing factors. So far we've tried bleach, baking soda, white vinegar, rust remover solution, general cleansers, and paint thinner to no avail. It's as if the stain is coming from below the counter and is impervious to all attempts to remove it. Does anyone have a solution to successfully remove the stain other than replacing the countertop? Photo attached.