As any vet will tell you, cats are better off as indoor pets. They shouldn't be allowed outside unless you have some type of effective boundary control. It's safer for them and everyone else. Our two are never allowed out of the house (or the motorhome when we travel). However, there are a few cats in the neighborhood that are a real nuisance - not that it's their fault. I have hosed one or two down and they get the message. Staking netting on or just above the ground also works and it's quite amusing to watch. I also have a large live trap I used to use for coons down in Oregon. Not actually caught a cat yet and not had a problem lately, because I use generous applications of Cayenne Pepper when necessary, which also works exceptionally well on that other obnoxious crapping critter - the dog. At least cats bury it - unfortunately sometimes with your seeds. Neither are a problem if controlled properly by their owners. The owners are the ones at fault and with dogs they can be worse, walking their pet and deliberately letting it leave it's stinking pile on your property as well as public property. Then there are the do-gooders, who insist on feeding the local feral cats, mistakenly thinking they are doing a good thing. They should be captured and taken to the pound or humane society and at least spayed and neutered. While I am, as you can tell, a cat person, if I ever catch one in our yard, I will politely return it to the owner (if I can find them), along with their other property deposited by their pet, my comments and if necessary a seed bill (not that I expect they would pay it). Otherwise or on second offense, it will go to the humane society (where we adopted ours from) - but minus it's collar, if is even has one. It's the people who are irresponsible, not the animals.
I knew someone once who had a reoccurring problem with dog owner. Finally, he scooped several days worth in a paper bag and dropped it through the letter flap in their front door with the message "You forgot this." No further problems. Here, it's easier to video and call the police. The fines are every effective and it doesn't even take up their valuable time, as we have a dedicated code enforcement officer and she takes care of all kinds of issues. Fortunately, these days the vast majority of dog owners are responsible and carry their little roll of poly bags. If they want to bend down and invert the bag and pick up that warm gooey mess in their hand and carry it home, I have to respect that. Unfortunately that's not happening for cats, though you can leash train them when they are very young. Cat litter boxes at least are a bit less personally interactive.... and some self-cleaing ones are pretty clever these days.
BTW: I don't dislike dogs, I am just not particularly fond of them. I'll borrow someone else's for a minute or so now and then. Overall for me, they are too dependent and demanding of your attention - that and they tend to stink up your house, your car (and heaven forbid if you take them in your RV), even if you groom them regularly - cats do that themselves, they are auto cleaning. And before anyone flames me on that, yes there are exceptions to both, just like human beings.
One last comment. Cayenne Peppers are easy to grow and prolific - which makes them cheap. Just don't try to grind them in a food processor or you will regret it - they are not sealed devices! Use a blender or similar blade type coffee/spice/herb grinder....... but this year....... ah, this year ....... I grew Carolina Reapers!!! - for human consumption of course, but I'm willing to share, heh, heh.