You could contact a cat rescue charity and they will come and capture and neuter the cats (then release them).
You could have a look at a by-law that doesn’t permit owners to behave in a way that attracts cats on to common property.
But I find these posts a little troubling. You got rid of a large tree to get rid of ibis, now you want to get rid of cats.
But, really, what’s the problem? Are the cats really a nuisance or do you just not like cats?
Good luck with the rats when the cats are gone.