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I have the box and 3 months worth of Sentinel left from the years supply I bought last time-it does say on the box that it's suppose to remove and control adult roundworms. I give him his heartworm meds regilously on the 1st of the month every single month, and have been doing so since he was about 10 weeks old.
Sentinel Specturm Chews are used to prevent heartworm disease, control flea populations and control intestinal worms in dogs. Regular treatment with Sentinel provides long term protection and control of flea infestations, and aids in the treatment of flea allergy dermatitis in dogs.