This thing is a perpetual motion machine, and probably a fraud. One of the testimonials said they put in the "bag of ice", and it worked great. BAHAHAHAHA. I love to call a frog , "A FROG" Bill Scott 61 Bambi, VAC & WBCCI #3221 1VP & Membership Chairman , WDCU http://www.servintfree.net/wbcci-dc/