Hi 3carat,
I don't know if eco-vie is still available. You might try "bug arrrest". Call the pet stores in your area to see if they carry it.
One of my best friends found that neem(s) works very well. I think your hands have the same symptoms as her's. She couldn't work or do anything with her hands. There is a thread on neem here on this site.
or...for some info:
Discover Neem Oil: Uses, Benefits, Recipes and Remedies
I believe this might help you. If you want to pm me, I will call her to find out what product she is using.
In the white light,
~jonsi