It seems like it's only in the towns and suburbs that cats become an issue...and also in places where they catch them, spay/neuter them and then release them. The problem in these pictures is not the cats but the humans and their "love" of animals that keeps them from doing the necessary thing. So far, the only solutions I've seen are woefully pitiful compared to how it was all handled back in the olden days...and the cat populations are steadily on the increase...these solutions are not working.
One, people need to stop feeding feral cats. Stop neutering/spaying them and stop feeding them. Cats have been regulating their own populations since time began before animal lovers started intervening. Toms kill whole litters of kittens, when the toms still have their balls attached, to kill all possible future rivals...they may leave a female kit or two and they also will have a territory in which they will kill other toms to defend their hunting rights and breeding rights.
All that goes out the window when humans start to feed the cats...no need to defend a hunting territory then. Cut off the balls, no more natural selection going on of rival cats and kits...no drive to defend mating rights.
Cats getting killed on the road, eaten by foxes and coyotes, killing each other in fights...all of these things are natural selection and ways of thinning out the cat population. A cat is more a wild animal than a domesticated one by far and can fend for itself out on the land easily, so it's just the humans that gum up the works on how to keep cat populations down...naturally...as they have always been controlled since the beginning of time.
Farmers that saw stray cats on their land back in the day and who didn't want them near the chickens would shoot them, just like they would a stray dog. Another natural control of one predator towards another about hunting/food rights. It's not cruel to someone's pet, it's predator against predator as it should be. If you own a predator and don't want it to die, keep it at home....my advice is just to not own a predator if you can't stand the thought of it dying. That's dog or cat.
When I was young no one fed a cat past the kitten stage...no cat food. They lived off what they could catch and they defended their hunting and foraging from all others..or they were killed in that defense. Stray cats were regularly shot whether you had livestock or not...folks knew how to get rid of a nuisance back then and everyone knew everyone elses cat, so no known cats were killed..just the strays. Same with dogs..everyone knew whose dog it was and would just call them up and tell them to keep him at home because he's doing _________ and he'll get shot the next time they catch him doing it. There were no hard feelings over that because it was expected and those who didn't want to lose a dog kept it tied up. Those that didn't care, didn't and the dog would often disappear, get hit on the road, etc. All of that was a form of pet population control.
Enter the animal lover that can't ever let an animal die....ever...it must be preserved at all costs because they will just hurt too bad if it isn't, so it must be. Now we have dog and cat population problems, overflowing shelters that won't kill the animals there either, and an ever growing crisis....all in the name of the love of animals. Creating their own crisis and then crying about it to all and sundry.
The simple, natural ways work and they have always worked and when sentiment was the luxury of a few..and not really tolerated...the animals were far better off, humans fought less over them, neighborhoods were more peaceful and quiet, and a cat peeing in a garden wasn't any big deal...just more fertilizer.