It's the same ingredients as Frontline Plus. The patent expired. I saw this in Sam's Club last week-end and it was around $30 for 3 viles. So I don't see any cost benefit. You can buy 12 viles of Frontline Plus from Entirely Pets for about 9.85 each when they have their 15% off moments. And shipping is always free. I apply every other month since it protects from fleas for as much as 90 days. So basically $5 a month. Even though the Armour ingredients are the same, I like the quality control I've seen with Frontline Plus and trust their reputation not Sam's Club/Walmart. Even if the cost were 50% less than Frontline Plus I doubt that I'd switch. It's such a small price to pay, I'll save money on things that don't involve my dogs health!

Thanks for your help.....With all the advertising, I was wondering......