It is important to have your dog or cat tested at least yearly for intestinal parasites and to use preventive medications all year round. (pethealthnetwork.com)
Indeed it may be simplest to just use preventive medications all year round or to see what your regular veterinarian recommends for your area. (marvistavet.com)
No matter what state you live in, you need to administer preventative heartworm medication year - round. (policygenius.com)