Product named " Universal Stone " works great and does not harm the surface.
Turned my brownish WW bright white and they have been white and easy to clean since.
22000 miles and counting....
It's cleaning clay for household but can be used many other places also.
I checked and its available through Amazon if you don't find it from locally.
Turned my brownish WW bright white and they have been white and easy to clean since.
22000 miles and counting....
It's cleaning clay for household but can be used many other places also.
I checked and its available through Amazon if you don't find it from locally.