Not sure if I'm posting this in the right place, but here goes, Zeus is 5 1/2 months old, I have been treating him with Frontline Plus since about 8 wks old, I have been buying single doses from the vet because his weight changes so much, I recently noticed him scratching a lot and checked him, he has fleas! His next does of Frontline is due on Wednesday, but before I buy it I want to ask everyone's opinion on treatments that have been successful for them, I want to get this under control before it gets out of hand. I use K9 Advantix 2 on my chihuahua and had success with it in the past, but I noticed a couple fleas on him today. Someone recommended Sentinel to me, never used it before, but I'm willing to try anything. I treat my dogs for fleas every month and never miss a dose, but it seems like the stuff isn't working anymore, suggestions?
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