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Q: Can Flea's Become Amune?

May 25, 2010 | By Ches21 | 3 answers | Expired: 1629 days ago

Ches21

I recently gave Skitters her frontline plus and the last two times she has gotten it all of her fleas do not go away. This time she still has tons of fleas but every time before the last two times we got rid of all of her fleas nothing has changed. So could the fleas have become amune to the frontline plus or what? Does anyone know?

Readers' Answers (3)
Mary C.
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May 26, 2010

Yes they can become resistant to that active ingredient. You should use a product with a differant active ingredient every so often so this does not happen. I don't reccomend box store brands such as Hartz but try Advantix for a couple months than go back to your regular flea treatment.

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Jillian
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May 26, 2010

*in addendum to mary: just be sure to allow a grace period between applications between frontline and the new meds you try {which advantix is the best alternative}. it's hard on the animals systems when you dose them w/more toxic chemicals. some animals can handle it fine, others not so well.

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Michele Z.
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May 26, 2010

Did you check to make sure the Frontline had not reached its expiration date? Perhaps it was not potent enough when you administered it?

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