text:  If they have an irrigation system, look in the control valve, which is down in the ground. If you have storm drains, look in the storm drains and see if there's any water accumulating there. And it doesn't have to be much water. Mosquitoes generally only need a very, very small amount of water. It just has to stay in the area for at least a week. But it could literally be a thimble full of water that they can reproduce in