Yes, this can happen. Vectra 3D has been designed to spread rapidly over your dog’s skin to provide fast protection to all areas of your dog. This, in addition to the unique formulation of Vectra 3D, can result in a transient itching sensation experienced by some dogs as the product moves across the skin. Follow the application method shown above to enhance product movement and reduce sensation. If your dog does experience itching, try a simple distraction such as playing ball or going for a walk until the Vectra 3D is dry. For the small percentage of dogs that do experience itching, most only experience it the first time Vectra 3D is applied, so Vectra 3D can be applied again with confidence in the future