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Review title: Are the fleas becoming immune?
Product review: I used Frontline faithfully on my Shetland Sheepdog up until he passed away in 2003 and it always worked great. I've recently adopted a little dog and I have been using Frontline through this flea season. I guess I'm going to have to ask the vet if I can use a different product on her...she is full of fleas and the yard has been treated. I'm going to have to get old school with this. Flea combs and flea baths.
