BUZZER VIBRATION TO WARD OFF:The mole repeller vibrate and make sound waves about 400 to 1000 hertz through the buzzer,it can ward off moles, gophers, voles, dandruff and other destructive rodents. SOLAR ENERGY:Equipped with the solar panels and rechargeable batteries, capable to absorb sunshine and come with longer working time, no need to replace battery. SUITABLE FOR MULTIPLE PLACE:Apply to your garden,farm,paddy field;it can ward off moles, gophers, voles, dandruff and other destructive rodents. EXCELLENT WATERPROOF PROPERTY:The product has the characteristics of rainproof and waterproof, and can work continuously even on rainy days. But it can't be soaked in water for a long time. Instructions for use: Step 1 - Insert the device into the ground and make sure the top is about 2 inches from the floor to prevent water from flowing into the interior. Step 2 - Press ON button . When you hear a "buzz", indicating that the Solar animal repeller is running. Note: 1. Wet clay is the best conductive medium of sound; It is difficult to spread sound waves in dry, sandy or peat place. 2. Do not cover the sensor. 3. Please select the solar panel on the top to get as long as possible sunlight. 4. Please install the device in the direction of the animal source for better results. Color: Black + Green material: plastic Package Contents: 16 * Animal Repeller Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.