ANNOUNCEMENT FROM DEBRA: After 40 years of providing information on toxic-free products, I am moving on to write about the next step beyond nontoxic. To continue my work, I’ve passed the torch to Lisa Powers, who will carry on with great enthusiasm. Learn more about Lisa here
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Question from HEG

Twice a year the maintenance people in my building put a couple algae tablets into our air conditioners. Do you know whether these are toxic and therefore I should have them removed or if they are nontoxic and beneficial as they told me?

Thanks!

Debra’s Answer

I’ve never heard of this. Algae isn’t toxic per se. Anyone have any more info or experience with these?

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