We have three cats; two are entirely indoor, one goes out in the back yard with us, a few times a year, and comes back in when we do (Fremont, CA).
We had gotten lax about flea treatment for awhile, because we went for months without her going out at all (typical in winter, when we don't go out back).
Recently, though, we noticed scratching, so checked for fleas and found that all three have a significant infestation. We had leftover Revolution from about one year ago, so we gave each of them a dose, but after three days we checked, and they still have active infestations.
So I thought maybe the Revolution was just old (it expires after one year), so I bought a brand new batch. This shows expiration date as next year, so it is fresh... gave each of them another tube each (5-15lb version), but after two more days, they are all still covered with fleas!! It appears that Revolution (*not* Revolution Plus) is not working here any more...
Has anyone else had a similar experience? What is going on?
We had gotten lax about flea treatment for awhile, because we went for months without her going out at all (typical in winter, when we don't go out back).
Recently, though, we noticed scratching, so checked for fleas and found that all three have a significant infestation. We had leftover Revolution from about one year ago, so we gave each of them a dose, but after three days we checked, and they still have active infestations.
So I thought maybe the Revolution was just old (it expires after one year), so I bought a brand new batch. This shows expiration date as next year, so it is fresh... gave each of them another tube each (5-15lb version), but after two more days, they are all still covered with fleas!! It appears that Revolution (*not* Revolution Plus) is not working here any more...
Has anyone else had a similar experience? What is going on?