Ultrasonic possum deterrents are widely marketed as a quick fix for possum problems. However, research shows these devices do not provide lasting results, as possums quickly adapt to the sound.
Ultrasonic Possum
What Research Says About Ultrasonic Possum Deterrents
Findings from The University of Queensland
A 2013 study by Bradley Gale at The University of Queensland confirmed that possums are not effectively deterred by ultrasonic devices.
- Initial reaction: Possums may startle briefly.
- Long-term behavior: They return to feeding or nesting almost immediately.
- Conclusion: Ultrasonic sound alone cannot prevent possum infestations.
Why Ultrasonic Devices Fail
- Tolerance to Noise: If a building provides shelter or food, possums tolerate the discomfort.
- Habituation: Over time, possums become accustomed to repetitive sound frequencies.
- Range Limitations: Devices claim ranges of up to 9 metres with frequency changes between 16–30 kHz, but this has no proven exclusion effect.
Are Ultrasonic Devices Effective on Other Pests?
Trials conducted in food companies with ultrasonic units designed for rats and mice have shown similarly poor results. Pests prioritize safety and food over auditory discomfort.
Why Proofing Works Better Than Ultrasonic Deterrents
The only proven possum control method is exclusion (proofing):
- Identify and seal all roof or wall entry points.
- Use durable materials such as metal mesh or sheet steel.
- Ensure no possum remains inside before closing access points.
Professional Possum Removal vs DIY Solutions
- DIY Limitations: Ultrasonic gadgets waste time and money.
- Expert Approach: Professionals like Peter the Possum Man use legal and humane trapping, followed by comprehensive proofing.
- Warranty: Quality proofing solutions often come with up to 12 months warranty.
Should You Use Ultrasonic Possum Deterrents?
No. Evidence shows they cannot replace physical exclusion methods. Possums need to be safely removed and entry points sealed to stop them returning.
Secure Your Home from Possums
Don’t waste money on ineffective ultrasonic devices. For long-term possum control, Peter the Possum Man offers expert inspection, humane removal, and full-proofing services across Brisbane.
Contact us today for a free quote and protect your roof space from unwanted wildlife.*
