“I buy this for my two mini aussies and I would highly recommend. Both of my dogs have the MDR-1 gene making them sensitive to ivermectin. Sentinel doesn't cause them any issues and they've been worm and flea free! The auto ship option is so wonderful, as well!”
“While it is an older product, newer is not necessarily better. It protects the dog from heartworm, most other worms, and fleas (prevents eggs from hatching and it has been my experience that that type of flea control is preferable)”