Diaotec Squirrel Repellent Ultrasonic Pest Deterrent Control Chaser Rodents Mouse Rats and Insects for Indoor Use 2 Pack EFFECTIVELY - Diaotec Pest Control consists of transducer and dual speakers, emits high impact pressure wave and 25KHz-60KHz changing ultrasonic sounds, effective in controlling rats, mice, roaches, fleas, crickets, ants and most of the other common pests intensively PROTECT RANGE - Diaotec Pest Repeller is suitable for using in home, apartment, restaurant, school, office, basement or any indoor areas. Effectively protects an area measuring 5,000-6,000 unobstructed Sq.ft (468-545 unobstructed Sq.m) Humane & Non-Toxic - It's kinder than traps, safer than poisons when used as directed, and there are no dead rodents to dispose of, so it minimizes human contact with mice, rats, and other disease-bearing rodents. Since the sound is inaudible to people and non-rodent pets, a green LED light tells you the unit is working properly. Safe for You and Your Pets - While the Squirrel and Rat Repeller is unpleasant to rodents, the ultrasonic frequency is inaudible to people and non-rodent pests. Note: If you have rodent pets, such as guinea pigs, hamsters, rats, etc., place the Deterrent ultrasonic emitter in another room. Eliminates Risks - By ridding away unwanted pests from your home, you also eliminate the number of health risks and other hazards that are associated with them. This prevents the spread of diseases, ticks, and other parasites from affecting the well-being of your home and family.