I just moved back to Prescott, Arizona from Southern California where I had treated my dog religiously for fleas. I had carpet powder, yard spray, Advantage liquid repelent from my vet, spray and flea shampoo. I bathed him before I left California and once I got here I did it again. I found two on my dog today and immediately bathed him with the flea shampoo. I have other dogs here at my friends house and I am afraid the fleas will go on them. It snows here and I am thinking they will die once it gets below freezing and if I keep up the vacuumming, bathing and spraying. Any other advise, please?