# Gecool MT09-B-01 Ultrasonic Pest Repeller, 4-Pack

Gecool MT09-B-01 is a four-pack of plug-in ultrasonic pest repellers with four selectable modes and claimed coverage of up to 1,200 sq. ft. per unit. The listing also describes electromagnetic pulses, but gives no independent performance evidence, so treat pest-control and pet-safety statements as manufacturer claims.

- [Original product page](https://bargainpostbox.co.uk/product/gecool-mt09-b-01-ultrasonic-pest-repeller-4-pack)
- [View offer](https://bargainpostbox.co.uk/visit/gecool-mt09-b-01-ultrasonic-pest-repeller-4-pack)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: Gecool
- Model: MT09-B-01
- Category: Tools & Garden > Pest Control & Repellents
- Price: 17.84 GBP
- Previous price: 20.99 GBP
- Discount: 15%
- Price checked: 2026-11-13T05:55:25.041Z

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Four selectable modes include a silent option, with LED colours identified for different operating settings.
- The listing claims ultrasonic waves and electromagnetic pulses are used together against a range of household pests.
- Each unit is claimed to cover up to 1,200 sq. ft. Multiple units are suggested for broader coverage.

## Pros

- Four modes, including a silent setting, give buyers options for quieter rooms and different operating situations.
- The claimed coverage per unit may help buyers plan placement across several rooms.

## Specifications

### Identity
- Brand: Gecool
- Model: MT09-B-01
### Power and installation
- Power source: ac
### Dimensions and listed weight
- Dimensions and weight: 1 x 1 x 1 cm; 220 g
### Operating claims
- Ultrasonic frequency range: 20–65kHz
- Claimed coverage per unit: up to 1,200 sq. ft.

## Before you buy

- The listing recommends continuous operation and says pest activity may initially increase during weeks 1–2, with the sonic barrier described as established by weeks 3–4. Coverage and deterrence results are manufacturer claims, not independently established here. The title says this is a four-pack, while the supplied details do not confirm package contents. The claimed safety around pets and adults is not independently confirmed.

## A good fit for

- Buyers wanting plug-in pest deterrents with several selectable settings for indoor spaces.
- Households considering several units for rooms such as bedrooms, kitchens, garages or offices.

## Less suited to

- Buyers seeking a verified pest-control result or independently confirmed pet-safety assurance.
- Buyers who need a confirmed package inventory before ordering.

## Frequently asked questions

### How many modes does the repeller have?
The listing claims four selectable modes and describes blue as silent, yellow as low-level sound and red as maximum output. It does not explain the fourth mode in the supplied details.
### What area does one unit cover?
The listing claims coverage of up to 1,200 sq. ft. per unit. This is a manufacturer claim, not an independently verified coverage measurement.
### How quickly should it work?
The listing says pest activity may appear to increase in the first 1–2 weeks and describes the sonic barrier as established by weeks 3–4. It advises keeping the units plugged in for continuous operation.
### Is it confirmed safe around pets?
The listing describes the device as safe around adults and pets, but that claim is not independently confirmed in the supplied evidence.

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## Images

![Gecool MT09-B-01 Ultrasonic Pest Repeller, 4-Pack — 1](https://bargainpostbox.co.uk/i/ufssja2S-PCND1Gl5yhDvsaVA5zHouQNHnp8s6VDNterG_EHRtOWb67t_JGg5RuKC32-P6SKzFiD1vDGEjdEekHfwjmEH1BMn3-it4hQbtimIqriOaOT4csN.jpg)

![Gecool MT09-B-01 Ultrasonic Pest Repeller, 4-Pack — 2](https://bargainpostbox.co.uk/i/iKbHY_zOqpWMrdv_tcfaLLZ2vn83A0g1--9lhlwbbnjSluByvtxU1jCanCweKAO8zKD5mDc_Ba7SFAj9VaY7DIBTs5t68SfF6L-cszASuURYgWw7e7AikROT.jpg)

![Gecool MT09-B-01 Ultrasonic Pest Repeller, 4-Pack — 3](https://bargainpostbox.co.uk/i/CLxQ4tJk7f6urHAoIF0SVVBr5UgnRSaiD90tjubA4H-0xuOkZwFCcKsUKXlIO611h-mXH1xeTg5FNdRnaxr1n4sNhAgkGaUfw1SG_EyqdZ5mOEAr5YmrOK9K.jpg)

![Gecool MT09-B-01 Ultrasonic Pest Repeller, 4-Pack — 4](https://bargainpostbox.co.uk/i/lT8zTM_YB3DlVxy8HfGyyLONrArP6Zkxrx1-PI0SGC786QL8Wp6mk9STSeWOpaPqTii4cfocr9NEyWs9XAKTdKkyALQGmUm2AqNVnuE_h4zrq1ExzjSTs7Bh.jpg)

![Gecool MT09-B-01 Ultrasonic Pest Repeller, 4-Pack — 5](https://bargainpostbox.co.uk/i/syUefTwmacbZ13NBVq851m9ovlygXYfStS97cuCv4Svi2QTHh8eprrTuEUqn-ffqkYzTEa0i1AfdufsfCYiYT5rorU0hR_dY7el0E7GXyhyDH4SyCIHfrNd5.jpg)

![Gecool MT09-B-01 Ultrasonic Pest Repeller, 4-Pack — 6](https://bargainpostbox.co.uk/i/HPnjwLk_yzT--HIVTwuRhtu6ZKf90WKy5O_gGmCRG3UyfPXh89ClqE52WC83bDsmJK7SjirS44jYMpeTFvPXjBZcwAHRcgQBFtAaa07T08kJYJGOVizlMfu0.jpg)

![Gecool MT09-B-01 Ultrasonic Pest Repeller, 4-Pack — 7](https://bargainpostbox.co.uk/i/7uTRobShw9fSh4yRh9zSnNdkH8vDYTao5g_7fea04-8C1VqnX9ibUHnC8VgZKGHrIFha47EDi-eMaXaM5ekjbhBqbzkEX4wv2EgVA7JXqIy4LjhgMNkdhvdO.jpg)