Sentinel Flavor Tabs for Dogs, 11-25 lbs, (Green Box), 6 Tablets (6-mos. supply)

Sentinel is the least expensive proven heart worm prevention by far and also controls fleas at the egg stage and whip worms. Merck is a wonderful company who will talk. to you about anything related to the usage of the meds and your concerns and will pay the vet bills if their product failed your animal. Kudos all around. I won't give my Harry anything else.

Now, I've spent a few years as a kennel tech in a Veterinary Hospital. I know what works. What to look out for. Risks. Sentinel has always been a relatively safe brand for all dogs! (Be sure to buy the right weight range!) And it protects very very well! The price is also incredibly affordable thanks to chewy. (If you have a dog who stays mostly outdoors and sentinel has not been doing enough for them, try looking into bravecto's line. It is a bit more expensive but effective.) Thank you Chewy for making my purchase so easy even with my mishaps!

My dog had belonged to my dad. He’s now going on 18. I hand feed him. He’s blind, doggie dementia and occasional incontinence, but he always knows when it’s time to eat. He doesn’t have any problem with the Sentinel. He still gets around like a pup.

As a vet tech for decades, I can say this is my choice in parasite prevention for my dog. For those saying their dog still got fleas, This product does not kill or prevent fleas from getting on the dog. The medication in it simply prevents fleas from reproducing. So if you have fleas in the dog’s environment, you need to treat it with a secondary adulticide, as well as treat the environment. If there are no fleas in your dog’s home environment, but happens to pick one up while out on a walk or something, this product will help that or those fleas not turn into thousands. Environment control is a must. What fleas you see on your dog are only 10% of what in the actual environment.