Frontline use to work great but something has changed.
an animal rescurer
OCT
30
2008
I have used Frontline for over 10 years and have loved it. This summer I had some flea problems that I never had before when using Frontline. I also heard other people were having the same problems. When I contacted the Frontline 800 number I was completely blown off.
In response to
Meri's
comment from Nov 5, 2008 at 11:46AM:
I think that perhaps the fleas and ticks have built up an immunity to the current formula. This stuff has been used to kill fleas and ticks for years now. I don't believe it's out of the question to think that this could be a problem. I still use the stuff because it's better than nothing. What I am doing now is rotating Frontline with Advantage.
I thought my experience was weird. I didn't know others were experiencing the same thing. My dog got two ticks. I wonder if they have changed the formula.