Guardian One Flea Monthly Prevention Cap Dogs 10-20lbs 6 Months

Guardian One® Monthly Prevention Cap for Dogs 10-20lbs: Nitenpyram begins working in 30 minutes while Lufenuron provides 30 days of protection. Nitenpyram and Lufenuron are both safe and well-established ingredients. Our products contain only natural ingredients and are preserved using oak or hickory smoke. They have a long shelf life and are packaged in airtight bottles to minimize air exposure.