I discovered a blog post that reviewed in practice a handful of cat repellers. The writer did not merely browse product reviews; they actually conducted real tests to determine which ones worked and what was not. It was basically outsourcing the hassle for us. Read more now on www.medium.com/@john-gardener/5-best-cats-repellers-i-tried-them-all-d62c1715c811.

Their opening experiment was a sensor-triggered spray device. Picture a burglar alarm, except it sprays a jet of water on your neighbor’s cat. The article noted it worked on the spot. Cats can’t stand surprise showers. The catch? Even your own footwear could get soaked, and you might forget about it.
The next repeller was an ultrasonic device. It generates sounds that are high-frequency and audible only to cats. The writer said the idea was convincing, but the outcome? Inconsistent. Some cats ran off, while others just stared like judgmental professors, no doubt pondering the folly of mankind for draining batteries.
Next in the test series was a smell-focused repellent in the form of granules. Imagine it being a line of defense made of smell. According to the article, it kept cats away temporarily in gardens, but a shower ruined it. That meant continuous replacement, which adds expenses. Useful in the short run, not a lasting fix.
The next test involved spike mats. Not harmful, just awkward. When a cat touches it, they quickly realize, “No thanks, the grass is better.” The product is cheap, simple, and works well, but not pretty. Picture having guests over and needing to justify why your yard looks full of landmines. Still, it does its job.
The last product was a fence accessory, a rolling tube that spins when cats attempt to climb. They slip, not hurt, but unsuccessful. Reading about it was hilarious, almost like a funny fail video, where the cat tries repeatedly before sulking away.