Can You Use Diatomaceous Earth for Fleas? | PetMD
Jul 08, 2019· Diatomaceous earth can irritate the nose and nasal passages if breathed in, says Glen Ramsey, board-certified entomologist and technical services manager with Atlanta-based Orkin. And the NPIC warns, "If an extremely large amount is inhaled, people may cough and have shortness of breath. On skin, it can cause irritation and dryness.
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