We're in Kansas. We do Heartgard year round, but we only use Frontline during the warmer months. We stop applying Frontline after the first freeze, and start it up when things thaw in the spring. That's what our vet recommended we do. Our dogs don't have much contact with other dogs, and they don't go outside very often. I suppose if they did either of those things, we would probably use flea protection all year long. |