There are many reasons to keep you pet on prevention year round. Sentinel Spectrum, Revolution & other similar heartworm preventatives also protect your pet from a number of intestinal parasites like roundworms. Although heartworms are not common in Nebraska winters, most intestinal parasites will survive & can infect your pet any time of year. Some parasites can also encyst in the body & re-emerge later on causing infection. A number of these parasites can be past to other pets or people so regular deworming as a preventative measure helps keep our pets & you healthier. If you travel it’s also critical to maintain your pet on prevention all year round.