Ultrasonic Pest Repeller Greenmill GR5109 230V — electronic deterrent for rodents and insects

Greenmill GR5109 is a 230V ultrasonic pest repeller that uses high-frequency sound to discourage rodents and common household insects. The compact plug-in electronic device operates from mains power and emits ultrasonic signals designed to create an uncomfortable acoustic environment for pests without using chemical agents. Intended for indoor use, the unit is suitable for homes, garages, storage rooms and other enclosed spaces where reducing infestation and protecting stored items is required.

Advantages

The Greenmill GR5109 operates on standard 230V mains power and requires no additional refills or chemicals, offering a maintenance-light solution for pest control. Its ultrasonic output targets pests through sound rather than toxic substances, making it suitable for spaces where chemical treatments are undesirable. The plug-in design enables quick installation and relocation, while the compact form factor minimises visual intrusion in living and storage areas.

Suitable for

• Residential rooms and apartments
• Garages and basements
• Storage rooms and pantries
• Workshops and utility rooms

Key specifications

• Power supply: 230V mains
• Operating principle: ultrasonic sound emission
• Target pests: rodents and common household insects
• Installation: plug-in wall socket
• Intended use: indoor environments
• Maintenance: no chemicals or refills required

How to use

Plug the Greenmill GR5109 into a 230V wall socket in the area where pest activity is suspected. Position the device so its front faces the open space; avoid placing it behind furniture or behind curtains that can obstruct ultrasonic propagation. For larger areas or multiple rooms, use additional units positioned in adjacent spaces. Leave the device powered continuously for ongoing deterrence; periodic checks can verify that the unit remains plugged in and unobstructed.

Usage recommendations

For best results, place the unit at a height of approximately 30–150 cm above the floor and keep the area directly in front of the device free of large obstacles. Combine ultrasonic repellers with good sanitation practices and exclusion measures (sealing entry points) to improve overall pest control effectiveness. Not all species respond equally to ultrasonic deterrents; monitor pest activity and adapt placement or supplement with other control methods if necessary.