“My vet recommended Simparica for fleas. It worked like a charm. I have small, medium, and large dogs and they have all benefited from using this product. They are indoor/outdoor dogs. Within 2 weeks no sign of fleas. Three months later no sign of fleas. I also treated my cat with Cheristin at the same time and treated the carpets ONLY with Fleabusters granules/powder. Do NOT treat your pets with Fleabusters powder, it will dehydrate them and then you are looking at vet bills. I am truly a skeptic when it comes to using new products, but my animals thank me everyday for not being one when it came to Simparica.”