The one we produce runs off 110 volt (have not worked out the kinks for the solar unit yet). A photo cell is mounted on the side so that the unit only turns on at night. A small wire whirls around (quickly) at the bottom cutting off legs or arms or heads. When the bugs hit the water they are wounded but not dead. There are several different manufacturers of similiar units, but I do not have their stats. Regardless of where you purchase this unit, it will pay for itself time and time again. "Free protein" for the fish, and when used in combination with gambusia minnows you can almost be certain of not having a bug problem down at the pond (skeeters, biting flys, ...). I spoke with a customer a few weeks back who had stocked his pond with gambusia and put Bug-O-Matics about every 100 foot around the pond. He irrigated his fields this summer and claimed not to have gotten ONE mosquito bite.
Like I said above, regardless of where you purchase one of these units I believe in them 100%.
Deb
