Sentences with phrase «pyrethrums kill»
Pyrethrums kill adult fleas but are short - lived.
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In the book, Low Cost Natural Cures for your Dog and Cat by John Heinerman, he mentions the use of products made from pyrethrum (pyrethrins) for killing fleas.
The first active ingredient is the botanical Pyrethrum, an extract of a Chrysanthemum flower, which provides effective knockdown and quick - kill of listed insects.