I use Vectra- it repels and kills fleas, ticks, mites, mosquitoes. We don't have much of a winter here so I use it year 'round. Frontline is probably the front-runner in flea protection but our fleas are building up a resistance to it. I imagine that's not a problem in your area. So how is your daughter? Where is she stationed? How's it going between your wife and the pup?