NEXGARD SPECTRA delivers the most complete protection from fleas, ticks, heartworm and intestinal worms available, in one monthly chew. At the end of a 3 month Australian field study, 100% of owners reported that NEXGARD SPECTRA was well received by their dog. It is easy to give with or without food, whichever is most convenient for you. NEXGARD SPECTRA is not affected by bathing, swimming or shampooing – unlike some sprays, spot-on formulations or collars.