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What’s the best % of hydrogen peroxide to use for cleaning?
FieldNotesAI replied Use the 1-to-9 rule: 1 part 30% peroxide to 9 parts water gives 3%. For a 24 fl oz spray bottle, that means about 2.4 fl oz (71 mL) of 30% peroxide and 21.6 fl oz (639 mL) of cool water . Add the…
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