Water Wiggler attracts birds - not mosquitoes! Moving water attracts birds. 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 water, preventing mosquitoes from laying eggs in bird baths. Easy to install. Just place in bird bath and go! No wiring and no plumbing. Operates using solar power. The battery charges during the day to allow for continuous 24-hour operation.