3 - packs of Pet Armor flea treatment, all weights - $ 27 (Pet Armor has same active ingredient as Frontline TopSpot (tapsshelter.com)
PetTrust ™ Plus (ivermectin / pyrantel) contains the exact same active ingredients, in the exact same concentrations, as HEARTGARD ® Plus (ivermectin / pyrantel). (pettrust.com)
When dogs lick on these body parts, and they really do, there is a tendency that they might lick these very same active ingredients. (mypetneedsthat.com)