Defendy Solar Ultrasonic Cat Repeller

Ultrasonic Scarer with sensor and strobe

By Craig Basset, Expert Reviewer for Repellent Guide

published: Sep 05, 2023 | updated: Sep 05, 2023

Maintaining a peaceful garden is every homeowner's dream, and this means keeping unwanted animal visitors at bay. The Defendy Solar Ultrasonic Cat Repeller promises to safeguard our private territories from these unwelcome guests. But does it deliver on this promise? Let's delve into the details.

Product Description:

Defendy's Solar Ultrasonic Cat Repeller is a multi-functional device designed to deter a variety of animals using ultrasonic frequencies. It boasts: - Eco-friendliness: The device operates without chemicals or toxic substances. - Durability: Crafted from high-quality ABS material. - Energy Efficiency: With solar charging, USB charging, and advanced power supply technology. - Weather Resistant: IP44 waterproof rating ensures functionality even in adverse weather conditions. - Sensitivity: Detects small animal movements up to 30 feet away in a 360° range. - Versatility: Apart from deterring common garden intruders like cats, dogs, and squirrels, it also repels other animals like boars, birds, and raccoons.

Testing Procedure & Personal Experience:

As I've had issues with stray cats sneaking into my garden, I was eager to try out the Defendy repeller. On unboxing, the first thing I noted was the relatively short stand that came with the device. Given the 360° detection claim, I felt a higher stand would offer a better vantage point. Hence, I improvised a little and mounted it on a taller stake.

After setting it up in a central location, I experimented with various sound modes. Some were clearly audible and quite jarring in the tranquility of my garden, while others were seemingly ultrasonic. Over a span of two weeks, I noticed a decrease in cat visits. However, one or two cats seemed more curious than deterred, approaching the device cautiously.

The solar charging feature, while eco-friendly, seemed to not fully charge the device. On days with frequent triggers, the repeller often stopped working, presumably due to a drained battery.

Feedback Compilation from the Repellent Guide Team:

  1. Positives:

    • Some team members observed that certain regular animal visitors, especially cats, were deterred.
    • The waterproof feature was appreciated, especially in areas prone to sudden rain showers.
  2. Negatives:

    • Several team members expressed dissatisfaction with the stand's height, feeling a taller stand would offer better efficacy.
    • Multiple team members found some of the sound modes too intrusive, disrupting the calm of their gardens.
    • The solar charging feature, while eco-friendly, did not seem to provide a robust charge for the device, leading to frequent downtimes.


The Defendy Solar Ultrasonic Cat Repeller has potential as a deterrent for unwanted garden visitors. However, its efficacy seems to vary based on the animal and the chosen sound mode. While the environmental-friendly features are commendable, there are areas like the solar charging and sound modes that could benefit from improvements.

For those seeking a peaceful garden, it might be worth giving the Defendy repeller a try. However, be prepared to experiment with the sound modes and possibly invest in a backup charging method.

Ease of use: 7
Value for money: 7
Performance: 6.5
Score: 6.8
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