I agree with the majority of posts. As a former spelunker, I know that bats love skeeters. I would check into the bat box thing already mentioned and do some resaerch on which type of fish would be the best at eatin' skeeters and still be a good fit for your pond. I def. wouldn't use chemicals. Do you have a dock? Maybe you could also hang a bug zapper or two around a dock or other such structure.

CATMANDEW