[downsouth95]

How about cedar oil - and I don't mean the small essential oils found in health food stores? I've used it in the past (ran out before we moved) - name is cedarcide or paws and claws (same stuff - two diff companies) It worked on everything. I used it on myself. If you cannot stand the smell of cedar forget it. It helped heal my adopted girl of her terrible skin issues when she came into our family - she had scabs everywhere and no fur from the waist to the tip of her tail... fleabite dermatitis. When you spray the dogs it will be super strong and it is greasy but it does dissipate with a faint cedar smell. As the vet said in G'ville, my dogs smell like a hamster. In the summer months I lightly sprayed and brushed it in every morning. Probably could get away with once every two days here - we lived in Gainesville Fl (city of trees). More trees more fleas (carried by squirrels). Worked great. Once I ran out of the stuff - I started seeing my girl start scratching and biting again - so I would give her a capstar to knock them out then ordered more cedar spray. I ran out again a couple of months ago. Need to put in a order $5.00 shipping.
If it's only one flea here and there I find the Petzlife Complete Coat works pretty good.
I have also used geranium oils, clove oil, etc. couldn't stand the smell of them and it really didn't work. The cedar oil worked great on ticks as well by the way.

HTH