According to my vet, the spot on treatments (frontline, advantage, etc.) is no longer working in all areas of the country. It has not worked in East TN for the last couple of summers. You might have to use comfortis and treat your yard as well as your home. I hate putting any chemicals in my dogs but had to switch to comfortis last year when the spot on treatments stopped working.
Sorry you are having a flea problems, I hate the little buggers.
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