Deadfast Mini Pro Sonic Repeller is a discrete alternative to prevent rodents entering indoors. The speaker emits high frequency waves to effectively repel rodents.High frequency ultrasound repels rodentsInaudible to people and non-rodent petsPlug-in deviceFor medium size room like garages, kitchen, etc.Variable frequency prevents rodents getting used to the deviceDeadfast Mini Pro Sonic Repeller is a discrete alternative to prevent rodents entering indoors. The speaker emits high frequency waves to effectively repel rodents. This sound is inaudible to people and non-rodent pets. It works with a varying range of volume and frequencies for maximum efficacy.How to Use: We recommend the use of Mini Pro Sonic Repeller in average size rooms (e.g. kitchen, living rooms, dining rooms, bedrooms etc) basements and lofts.Plug the unit into any 220-230V AC wall outlet, ideally near the room entrance. The red light will illuminate showing the unit is working properly. Clear surrounding objects awa