Outdoor Solar Powered Mole Repellent, Vole Repellent, Gopher Repellent, Snake Repellent , Mice Repellent, Shrew Repellent,Rodent Repellent Product Feature: 1.Material: ABS Plastic 2.Solar Panel: 3V/80mAh High Efficiency Polycrystalline Silicon 3.Battery: AAA 1.2V 80mAh Ni-MH battery (INCLUDED) 4.Frequency: 400-10000Hz +/- 50hZ 5.Charging Time: 8 Hours 6.Sound Waves of Approximately 400+/-50 Hz are Emitted into the Soil Every 21 Seconds, Deterring Moles, Gophers, Voles, Mice and Snakes Without Harming Them in Any Way 8.Results Take Full Effect 2 to 4 Weeks After Installation. Assembly and Note 1.Please make sure to charge it for at least 8 hours before use. Keep the switch "on" to start charging with sound. 2. Push the plastic tube into the soil and leave about 2-4 in. out of the ground. If the soil is very hard, it is best to create a hole with a piece of wood first before attempting to push the plastic tube into the ground. 3.Press the switch under the head of the unit to "on". Product operates and "buzz" sound.If you find no sound,place it in the sun to 5 to 10 minutes, and then check it whether with sound. 4. The range of this 6-pack module is about 24,000 sq ft. To cover a larger area, it will be necessary to use several devices. The unit is for use outside where it will be able to get direct sunlight, at least during part of the day. The apparatus requires no maintenance. 5. Please wait for one or two weeks while it is kept turning on. Then you can find moles disappeared.