Repel moles effectively with this strong solar-powered mole repeller from Victor. The repeller sends a low pulse (audible, depending on how deep the repeller is in the ground) into the ground every 30 seconds, which the moles will find very irritating. After one to 2 weeks, the moles will tolerate this more and move away never to return. The repellent runs on solar energy and can therefore work for up to 5 days without charging. This way, the repeller will continue to work even on dark days. The repeller has a range of up to 675 square meters, which equates to a diameter of 28 meters. This depends on the weather and the surface. Damp soil is ideal for dispersing the sound (do not place it directly in molehills or tunnels), but it is advisable to remove the repeller if the ground is frozen or flooded. Dimensions: 7 x 29 cm Sound frequency: 400 Hz Brand Victor Summary Strong solar mole repeller. Up to 675 square meters range. Works for up to 5 days without charging.