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Guide offers best practices for safely using bleach to clean and sanitize

Bleach brochure

East Lansing, MI – Employees who use bleach for workplace cleaning and sanitizing are the focus of a new safety guide published by the Michigan State University College of Human Medicine, Occupational and Environmental Medicine Division.

The guide offers best practices for workers exposed to bleach, including janitors; housekeepers; environmental engineers; and hospital, restaurant, maintenance and agricultural workers. Bleach should be used only when required and in the right amount, the guide states. Users also should remember that bleach concentrate has a stronger solution than regular bleach.

Other tips:

  • Read and follow the label of any cleaners you use.
  • Wear label-required personal protective equipment, including gloves, when cleaning blood or vomit.
  • Avoid bleach splashes by adding bleach to water rather than adding water to bleach.
  • If you must use a spray bottle, set the nozzle to produce a heavy stream instead of a fine mist.
  • Open windows and doors or turn on an exhaust fan.
  • Apply bleach solutions directly to a disposable cloth, paper towel, or a non-disposable cloth that is laundered in hot water and dried after each use. Do not apply bleach directly to surfaces. Do not use a sponge.

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Mary Ostrowski
August 1, 2017
Can you please explain why bleach solutions should not be applied directly to surfaces and only to disposable cloths, paper towels, or clean non-disposable cloths? Why is the use of sponges discouraged? Thank you!

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Safety+Health magazine
August 8, 2017
Mary: We checked with Dr. Kenneth Rosenman, chief of the Division of Occupational and Environmental Medicine at MSU. His response: "A major objective of the brochure is to discourage spraying. Spraying onto hard surfaces leads to increased aerosolization and lingering air concentrations, which increase inhalation and exposure. Spraying has been associated with increased risk of asthma. If told not to apply directly, another way of saying don’t spray on a surface is to recommend that the diluted bleach be poured onto a cloth and applied via the dampened cloth. The additional rationale was that bleach solutions are best applied with a cloth to ensure a better application/distribution over the surface. Additionally, it has been suggested less cleaner is used in this manner. Sponges, in general are hard to rinse or clean. They may retain particles and microbes."

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Rose
June 25, 2018
Is there a dilution of bleach that does not require an eyewash station to be right near by per OSHA Standards. (That is to say, we have the bleach near our sink. We use it there. However, we also have spray bottles around the plant that have a 100ppm concentration of bleach. ) Thank you