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How Repellio works

Sound waves instead of poison: what the device does, where it works best and how the effect builds up over the first weeks.

The idea in one sentence

Repellio does not fight pests, it makes your home a place they would rather not be. According to the maker, the device fills a room with sound waves that pests find unpleasant, so they leave and look for shelter elsewhere. Nothing is sprayed, baited or killed.

Repellio in a wall socket sending sound waves towards a cockroach
Repellio works where its sound waves reach: in the open space of the room it is plugged into.

Three kinds of waves

The maker describes a triple sound-wave technology. The point of combining three signals is that pests should not get used to a single, constant tone.

  • Ultrasonic waves. High-frequency sound above the range of human hearing. This is the classic principle behind plug-in repellers.
  • Electromagnetic waves. According to the maker, a second signal that adds to the disturbance pests feel in the room.
  • Bionic waves. The maker's name for the third component. It does not publish technical details, so we describe it the way the maker does: as a further sound pattern pests find unpleasant.

For you, the important part is simple: you do not need to set anything. Plug the device in and it runs all three on its own.

Why rooms and walls matter

Ultrasound behaves a little like light. It travels through open air, bounces off hard surfaces and is swallowed by soft ones. It does not pass through walls, closed doors or solid furniture. Three practical consequences follow from that:

  • Every room with pests needs its own device. One device covers 120 sq ft (about 11 m²).
  • The device should face into the room. Behind the sofa or a curtain, much of the effect is lost.
  • A cluttered basement or a pantry full of boxes may need a second device for the far corner.

Not sure how many you need? Count the rooms where you notice pests. That is your number.

See the packs

Placement checklist

  • Use a free wall outlet close to where you see activity, such as near the kitchen counter, the pantry or the bathroom.
  • Keep the space in front of the device clear.
  • Indoors only, in a dry place, and never covered.
  • Not in the room where hamsters, guinea pigs, rabbits or other small pets live.
  • Leave it plugged in day and night.

What happens in the first weeks

Because Repellio changes behavior rather than killing on contact, the effect builds up. The maker describes three stages:

  1. Days 1 to 5: pests become restless. You may briefly see more of them as they leave their hiding places.
  2. Around week 2: a clear decline in sightings, droppings and noise.
  3. Weeks 3 to 4: according to the maker, a pest-free home in most cases, as long as every affected room has a device.

After that, the device keeps the room unattractive, which is the real advantage over a spray: it does not stop working when the can is empty.

Ants moving away from a Repellio device in a wall socket

What you do not have to do

No refills, no batteries, no app, no cleaning out traps, no airing the kitchen after spraying. The only running cost is a little electricity.

Ready to try it at home? Test Repellio for 30 days with the maker's money-back guarantee.

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