I keep coming back to Petfriendlybox. I've paused my subscription and come back 3 different times, they keep proving themselves as both effective and affordable. Now I can get heartworm medication on top of their excellent topical flea and tick prevention. I've tried other brands but Petfriendlybox has kept My pups clear of parasites and comes with high value treats for fun. I might even try the dental treat eventually after they get a dental cleaning. I love the personalization and I've kept a few of the boxes solely because of the cute art like a bus and a boombox design. I wouldn't change a thing. It's way more affordable than the best prescription chews and replant collars and does just as well.