I put Frontline on Jack and Asher on Sept. 9. It's only been 10 days, but I noticed about 3 or 4 fleas still alive on Jack. Is this normal for some fleas to still be alive? How long does it take for them to die off? I got six months worth of Frontline from the vet when I took Jack and Asher in.
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9/19/07 at 4:03pm