We're at our wits end with fleas this year. I've treated my dogs TWICE with Frontline Plus since we first noticed them, and they're still there. I just talked to my vet, and she said that I'm not the first person to call with this complaint this year. She suggested we try a pill called Comfortis, but it's going to cost $16 per dog per month. Has anybody else experienced this? Does anybody know why Frontline Plus has always worked in the past, and this year it doesn't? I think I'm going to pick up the pills tomorrow and see if I can get some relief for my two itchy dogs.