Mosquitoes are a different story. Because I have a seasonal woodland wetland on my property, Spring mosquitoes are like clockwork, unless we have a super dry Winter/early Spring. To avoid an unmanageable swarm that can only be knocked back with malathion, I have to larvicide in late March, and then I hit it again a few weeks later for good measure. If I do that, I won't see a mosquito until those invasive Asian Tigers show up later in Summer. Those bastards seemingly don't require any water to breed(they do, but very very little).