Looks like the original Sani-Flush was still being sold until 2009 or so. With its main ingredient being sodium bisulfate, when some people didn’t follow directions and mixed it with chlorine bleach (drain cleaners like Liquid-Plumr or Drano), it created chlorine gas, which can be fatal.

Grocery shopping in 1964 was much more exciting thanks to Sani-Flush!

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