Sorry, evidently neither the spray nor laser channeled tasers are currently available to the general public. The only article I could find on either in the public domain was
http://www.ananova.com/news/story/sm_783659.html?menu=and
http://www.jaycor.com/eme/watcan.htmThe only site I found on the laser channeled taser was
http://www.hsvt.org/Defensenews.htmlThe prototype looked very much like a phaser from Star Trek (the beam). Trekkies everywhere will want their own. Brings out the kid in me.
-NIM