Does an ultrasonic pest repeller actually work?

Evidence is limited and mixed. Studies on ultrasonic devices show inconsistent results, and pests can get used to constant sound. Use it alongside sealing cracks and removing food and water sources.

Will it work through walls into the next room?

No. High-frequency sound is blocked by walls, doors and furniture, so each unit only affects the room it is plugged into. That is why the four-pack is meant for one unit per room.

Is it safe around cats, dogs and children?

The manufacturer says the ultrasound is inaudible to humans and pets, and there are no chemicals involved. Some cats and dogs hear higher frequencies than people, so watch for signs of irritation and unplug it if they react.

Can I hear the sound?

Most adults cannot, since the output is above the typical hearing range. Some younger people and a few sensitive users report a faint buzz or click near the unit.

Four plug-in repeller units. No batteries, bait or refills are needed; each unit runs from a standard wall outlet.

Does it replace traps or an exterminator?

For an active infestation, no. It is a deterrent at best. Traps, sealing entry points and professional treatment remain the reliable options for mice and roaches.