Yeah, I'm haveing a big problem with them myself, there seems to be
more and more around, no matter how much I clean the area. I have my
primarys and secondarys under airlocks with sulfitied water -- more
than half full. Only one has managed to drown itself in the airlock so
far.

I did a google groups search of this newsgroup when I firstg noticed
the problem.
http://groups.google.com/group/rec.c...rch+this+group
Most people don't agree with the adage that the fruit fly is the only
source of vinegar bacteria, or that the furit fly laning is a hopeless
inoculation with mother of vinegar. Just try to keep them out.

I tried one trick I read: I put some must in a wine bottle to trap
them. That didn't really work well, only caught a couple in each. In
an open glass, I was able to drown a couple dozen in a day and a half,
but I barely made a dent in the population. So now I just keep wiping
surfaces around my wines with bleach cleanser. I'll get those little
*******s yet.