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.

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.

Price

£17.84Save 15%

Reference price: ~~£20.99~~

Price checked: 13 Nov 2026

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Pros and cons

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.

Technical specifications

6 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.

What to know before buying

Listing details to confirm

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.

Who is it for?

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.

Gecool MT09-B-01 Ultrasonic Pest Repeller, 4-Pack · photo 2 — Additional product photo 2

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.