On Mon, 11 Aug 2008 18:52:27 -0700 (PDT), Yong Huang
wrote:

Here in Houston sometimes around midnight, the City dispatches a truck
to spray some chemical in neighborhood. The next day, there're less
mosquitos. What is that chemical? Can we buy it from any store? Some
parks in the city have absolutely no mosquitos. I think they treated
the grass and tress with some magical stuff too.

Yong Huang

You can buy your own fogger that works with a small propane tank (the
same kind of propane you use for a plumbing tourch). I have one here
in Maryland and it works great. To feel safer, I use a mask and
gloves and shower right afterwards. I think I bought mine at a local
farm supply store.