I have used Vectra 3D for monts now. It has worked great for my girls. But, even though the vet won't say this, I only use a half a tube on each of them. Even with just using half, I have not had any problems with fleas or ticks. We did have a few ticks but they were dead from the Vectra. Only 3 or 4 the entire summer. Where I am from, fleas and ticks are BAD. So I have been pleased. |