Attract birds, not mosquitos!  Moving water attracts birds.  The Water Wiggler works great to attract birds and helps prevent the spreading of West Nile virus by eliminating stagnant water in birdbaths.  Water Wiggler's unique agitator action creates continuous ripples in the water, preventing mosquitoes from laying eggs in the birdbath.  No installation needed.  Just place the unit in your birdbath and go!  No wiring and no plumbing.  Operates silently on 2 D-cell batteries for up to 2 months of continual use.  Operates 24 hours a day.