Making your own heavy-duty fiberglass scouring cleaner is simple and effective. This tried and true old fashioned recipe uses whiting powder, an ingredient commonly used in homemade household cleaners.
Whiting is a very fine powder composed mostly of calcium carbonate. As a mild abrasive whiting powder can also be used shine stainless steel, marble, glass, silverware, copper as well as other nonferrous metals.
As mentioned, it’s a common ingredient in homemade household cleaner recipes and a little goes a long way.
Fiberglass Scouring Cleanser
In a large plastic bowl, mix soap and borax into the water until dissolved.
Add whiting gradually, checking the consistency and degree of abrasiveness after each addition. Transfer the mixture into a squeeze-top container, such as a plastic condiment bottle. Repurpose a mustard or ketchup container for this, just be sure to label it well!
Squeeze some of the cleanser onto a damp sponge or lint-free cloth and scrub gently. Rinse and dry.