In-tank toilet cleaning tablet

In-tank toilet cleaners (also known as toilet water tablets, drop-in cleaners, etc.) are tablets or cartridges that add chemicals to toilet tank water to reduce toilet bowl stains. They are commonly used to prevent toilet bowl stains from calcium, limescale, mold, etc [1]. Most contain chlorine bleach as its main active ingredient [2], however some may use other main active ingredients.

An In-Tank toilet cleaning tablet placed in toilet tank
Blue toilet water from using in-tank toilet cleaner tablet

History

It is originally invented by Flushco, Inc. in 1978, branded as 2000 Flushes (acquired and now owned by WD-40 Company[3][4]) [5].

Eventually, some other brands and companies such as S.C. Johnson Scrubbing Bubbles [6] and Clorox [7] sold their own in-tank toilet cleaner tablets. It is unknown whether or not they received license from 2000 Flushes, however they likely did .

View from professionals and plumbers

Many plumbers, manufacturer of toilets, and other professionals discouraged in-tank toilet cleaning products due to major disadvantages [8]. A major complication that may occur includes bleach breaking down rubber gaskets and corroding steel parts [9]. Another issue is the blue dye commonly in in-tank cleaning tablets may cover up iron deposits [10].

Many manufacturers of toilets have discouraged the use of in-tank cleaners by voiding warranty of toilets that are damaged from use of in-tank cleaners [11][12][13]

References
  1. "In-Tank Toilet Bowl Cleaners". do it yourself. Internet Brands, Inc. Retrieved 2 December 2017.
  2. Klinkhammer, Michael. "Chlorinated in-tank toilet cleansing block". Google Patents. Google. Retrieved 2 December 2017.
  3. "WD-40 Company to Acquire Global Household Brands (press release)". 2001-04-30. Retrieved 2014-07-27.
  4. "Learn What WD-40 Stands For and More About Our Company History". WD40 Company. Retrieved 2014-07-27.
  5. US trademark #73176664, "2000 FLUSHES", CLEANER FOR TOILET BOWLS filed June 30, 1978
  6. Klinkhammer, Michael. "Chlorinated in-tank toilet cleansing block". Google Patents. Google. Retrieved 2 December 2017.
  7. Rader, James; Mainquist, William. "Toilet bowl cleaning tablet". Google Patents. Google.
  8. "Toilet Repairs May be Needed due to In-Tank Cleaners". Summzim Plumbing. Summers & Zim's, Inc. Retrieved 2 December 2017.
  9. "Fresh & Clean But Be Forewarned..." Lester's Plumbing Service inc. galnova. Retrieved 2 December 2017.
  10. "How Can I Keep My Toilet Bowl Clean?". Hefner Plumbing Company, Inc. Retrieved 2 December 2017.
  11. "American Standard Warranties" (PDF). American Standard. Retrieved 3 December 2017.
  12. "Warranty for Fluidmaster Products". Fluidmaster Products. Retrieved 3 December 2017.
  13. "Kohler Warranty Information". Kohler US. Kohler Co. Missing or empty |url= (help)
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