Bird B Gone Solar Powered Repeller

If you hate having birds on the roof of your house you can buy the Bird B Gone Solar Powered Repeller. As long as the sun's shining on it the propeller will continously move. It also comes with rechargeable batteries so you can use it at night. You can buy one here:

http://www.amazon.com/dp/B001445K1U?tag=craziestgcom-20&camp=213381&creative=390973&linkCode=as4&creativeASIN=B001445K1U&adid=1HBHCY4PN85CNZZQ6DXH&