Window Screen rubber-roped over the top is enough. Even if the water is high
and they do lay eggs, the screen keeps the adults from being able to fly
away.

John


"Celeste Evans" wrote in message
...
Had a well doh moment yesterday. I went to clean the screen of the city
bought rain barrel and the darn barrel was full of mosquitoes and
larva. I don't know why I assumed that the screen would keep the
dreaded vampire bugs out, but it sure did not. Obviously a mosquito
dunk is in order here. Talked to the city this morning and they seemed
unconcerned and said that a dunk would handle it and not everybody had
the problem. I thought that I would send a heads up to any of you who
have these barrels. My barrel has been drained and washed out and it
sitting in the sun awaiting our next rain so that I can put in a
mosquito dunk. I hate the thought of thousands of these darn things
breeding mosquitoes all over the city. Sheesh the city is selling
mosquito breeders. Yeah, I should have known better.

Cea