I've read that too- have no idea if it's true or not.
Here's my experience: I have been raw feeding for 1 year (Hobo is almost 15 months) and we've not had fleas. I'm in the same camp with TDJMOM and do not use any chemicals on my dog. Not sure if it's luck, diet, or what but so far so good. Hope that luck doesn't run out tomorrow

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