Yes, absolutely! Our Protect products are designed for year round use. In fact, we encourage you to do so. Flea eggs can lie dormant in your carpet, bedding, and furniture for months, which means a single warm spell (or someone turning up the heat too high in the winter) can trigger them to hatch. The best way to ensure your pet stays protected year round is to use our products year round. Not only will the spray protect your pet and home from insects, our shampoo will condition your pet’s skin and coat and leave their fur shiny and soft. Plus, your home will smell great! Protect Dog Shampoo | Protect Home + Dog Spray