Skeeter-B-Gone

This periscope-looking device is my attempt to remedy the significant increase in mosquito population we started experiencing in 2013.  My theory is that the skeeters were getting into the rainwater storage tank through the tank's overflow spout.  And were there is warm weather and water, many more mosquitoes will happen.  My piping creates a little water trap to keep them from flying into the tank's large surface area, and a screen on the exit is another barrier to the little blood suckers.  Now that the temperatures are starting to rise I should find out soon if this helps matters any.  If not, I'll keep scheming...