Solarrific&reg G4041 Solar Mosquito Zapper Solar powered, with easy replaceable Ni-Mh rechargeable battery. Attracts mosquitoes with built in blue LED light source,and eliminates them by the high voltage metal net around the light. This unit can be placed anywhere where normal power supply is not available, such as a tent, yard, or shed. Different stands are available for using this product in both outdoor and indoor locations. Manual on/off switch, this is not a Solar Garden Light, it would work during the day too as long as there is electricity. Please use it in dry condition, water would short the charged metal net and drain the battery. Mosquitoes also short the charged metal net and this is how they get zapped and killed. It depends on the infestation of mosquitoes of where you are but based on our test on a farm land, it killed 22 to 28 mosquitoes per night. Please charge it fully on a sunny day, then leave it where there are mosquitoes at night and let us know how many it kills over night. Thank you! ***Sorry, please note that we are currently runing out of inventory. However, we will offer this item at sale price again in 3 weeks, once we receive more inventory.