Why do people let their cats roam the neighbourhood all the time and mess it up?
My dog doesn't.
My dog just did, and might have made some puppies too.
Neighbor didn't seem to mind. Drove around for over an hour looking for him, seems he just invited himself into one of the apartments next door.
This thread is a couple of years old.
As someone who spent a while messing with trying to scare off cats with high frequency sound, can say it's a waste of time. Only effects a few cats, some get use to it and start hanging around again. Some just ignore it all together. Loud is loud, regardless of whether you can hear it, and it can still do some damage. The best cat deterrent is a large dog, cats walk past my house quickly and cautiously since I got my Labrador puppy. There is also a motion detector lawn sprinkler that soaks them pretty good.
When I was having major cat problems, it was do to over population. I had a neighbor who took in strays, but never bother to get them 'fixed', so he also had lots of kittens. Had about 29 cats+kittens for a while. Cats don't like to share their toilet, so they have to find a special place... Maybe my old neighbor moved in down the street... You should look around and see if someone is running an animal shelter on your block, might be the reason your yard is a toilet for cats, and see if they might consider getting rid of a few. A lot of places have limits on quantity of pets as well. They mean well, but aren't doing all the good they think for the cats, or the neighborhood. All those cats, also brought fleas, roaches, fire ants and rats, and probably other nastiness, besides the poop. Cats won't hunt, if they are well fed. I took 2 years to get rid of the pests, after the cat man moved, this was the first year I didn't have to fight, or catch anything in the traps.