However, you should consider why the nearby cats are always in your garden. You may be supporting them without even realizing it.
They might hunt birds on your property or other raccoon-like activities like digging in your trash cans.
Cats have extremely sensitive noses, so even smells that we wouldn’t even be able to perceive can be overbearing to them. The protagonist of today’s narrative intends to use cat-unfriendly sounding mini-machines as repellants.
The story’s title

The OP has about four or five cats that use the garden as a highway to get between various other gardens

The OP has started looking at cat repellants that are little machines which emit a sound

The OP’s cutting off the only access route for all neighbour cats and they’ll all be stuck in their own gardens

OP has offered the following explanation for why they think they might be the a-hole:
I worry that blocking cats from my garden would take away an important access route, forcing them near the road and also causing hassle for my neighbours. I also wonder if using cat repellant might be immoral, since they’re animals just like the other critters I’m welcoming into my garden.
We’ve gathered some of the most upvoted comments from other redditors for you to read through below

Gangs of wild dogs are obviously a sign of something wrong

The OP just assumed he had a rodent problem or raccoons

This redditor recommends a motion sensor sprinkler

There’s nothing wrong as long as the OP isn’t harming the cats

This redditor says that those devices can cause extreme stress to local wildlife

This redditor’s patio smells like cat piss if it’s not bleached

This redditor advices the OP not to get the noise making machines

Cat owners frequently act very strangely when someone doesn’t like their cat or their conduct. Some Redditors are still perplexed by folks who think it’s acceptable for their cats to roam the neighborhood, urinating and spraying people’s homes and yards where their kids play and disturbing wildlife and other animals with no attempts to reprimand them.
While being told that she was not the AH in the story, the OP received some advice on how to handle the situation.