Fiberglass Scouring Cleanser

1/2 cup soap flakes
1 1/2 cups hot water
2 teaspoons borax
2 to 5 teaspoons whiting

In a large plastic bowl, mix soap flakes and borax into water until dissolved. Add whiting gradually, checking the consistency and degree of abrasiveness after each teaspoon. Pour mixture into a squeeze-top container. Squeeze some of the cleanser onto a sponge and then wipe down the fixture. Rinse and dry.