What about LWLL ? Trading at a similar PE than CYXN, with a market cap of $13.6 mio. They saw some good revenue increase over the past few years, but earnings did not improve too much.
However, their latest quarter had 1.35 cents/share in earnings.(2.16 cents/share for all of 2008!, about 1 mio for 78 mio shares, on revenues of only 2.8 mio). If they can ramp up revenues, they should make great earnings in the future.
Disinfection industry is still very small, so they might have some early mover advantage.