I have used frontline and advantage for over 20 yrs without issue, but I do the spray on frontline, not the top spot. I have had maybe 10 fleas in 6 yrs at most so I rarely use anything most years. See a flea? I hit them with frontline. It has been 4 yrs but I just found a flea so I ordered a new bottle on line from amazon. I know many give monthly pills but I hate giving my dog internal meds for external issues. (Except capstar, which I do use if I pick up a rescue with fleas and give it an hour or 2 to do it's job before taking it into my house!)
As for natural, people swear by them, but study after study after study finds they do very little. Fleas carry disease. Some of the store brands are worthless, others report major issues. If they only got them at kennel, then you might luck out with one treatment but probably you need one now, one in a month, one in 2 mos and that should clear it.
Cedar is toxic and no longer recommended at all (though some put in center of bedding, cover with other material, which is probably safe). Frontline and Advantage are safe for older dogs, and they have proven low rates of any issues if used right. Additionally, they sterilze the fleas so they help stop the problem.
I have NEVER heard of these legendary fleas or mosquitos….
and I am a Portland native...
and have NEVER had a flea issue with my basenjis [Whippet, IG, RR, Newfs, or cats].
Our home ranges from 3-6 basenjis on average and still no problem, even with dogs that come/go for showing or boarding.
The only time I have treated them [my dogs] was prior to traveling to the midwest or east coasts.
During the time I lived in Portland, which is at the very northern end of the Valley and has more wind than the lower Valley, I noticed a lot fewer fleas and 'skeeters. I can understand why you haven't experienced them. Try camping on the shores of Fern Ridge sometime. Make sure you take lots of DEET. I grew up there and, man, the 'skeeters are horrible!:eek: I can remember our dogs and cats had a rough time of it, too. We were always picking fleas off them. But that's the difference between living in the city and living in the back woods.
The conditions in the lower Valley are perfect for the growth of fleas and mosquitos: standing water everywhere and very few hard freezes. (Gramma lives in the "sticks" too and has lots of both in her area outside Salem.) But, again, back to the subject, she used Brewer's Yeast and had pretty good results with it.