I was lucky in that I only took two bites that first weekend. West Nile hit my town earlier in the season than I remember. Then my mother bought me this:
Down side: Not cheap. Amazon Associates is saying 13.89 for the starter. And it requires a battery.
Up side: I have not taken a single bite since that first weekend.
It is quiet, and doesn't have enough scent for me to notice it. Because I am just out with the dog, I just hold the device - I haven't tested whether the clip thingy can hold up to a lot of physical activity. I also don't know how long the battery will last.
But this sucker works.