Frontline Plus Review

I've loved using Frontline for the the convenience and effectiveness for the past 5 years on both my dogs. No problems until the end of summer/early fall this year when I started seeing fleas on both dogs. I've been careful to applying as recommended: applying every month; didn't bathe the dogs within 48 hours of applying.

Now that Frontline is less effective, I'm going to try other products in the hope that alternating products will be more effective. I, too, wonder if the fleas have developed some immunity to the product.