The one best place to look is at Best Zapper Comparison and Review .The site compares 12 models of zapper from several of the most popular zappers available.
Zapper information is available.
ParaZapper MY, UZI-3, and CC-2 as well as other ParaZapper zappers are now available at http://huldaclarkparazapper.com .
Some of my other posts:
Chikungunya - Still spreading across the Carribean and to the US