How to Remove Hard Water Stains in a ToiletBy VIRIMI / March 31, 2021 The Spruce /Taylor Nebrija 1 . Pour 1/4 cup of Borax into the toilet bowl and swish it around with a toilet brush. ADVERTISEMENT [DISPLAY_ULTIMATE_SOCIAL_ICONS] Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17