Which is better, Nexgard or Sentinel?

So, we've come to the big question: which is the better choice between Nexgard and Sentinel? Let's dive in and explore the key points to help us make an informed decision. Both products are widely used for flea and tick prevention in dogs, but how do they compare? Do they have different modes of action? Are there any known side effects that we should be aware of? And most importantly, what's the cost-benefit analysis like for each one? Let's get into the nitty-gritty and find out which one comes out on top!