Nexgard Spectra XSmall Dogs [Orange] treats flea and tick infestations, controls intestinal worms, mange, and mites. It prevents flea tapeworm infestation and is used as a treatment for flea allergy dermatitis. Buy Nexgard Spectra for Dogs at the Best Price at DiscountPetMart with free shipping and bonus rewards. Save an additional 10% with the auto-order option.