lmao you're fukked then breh, they're never gonna stop returning now, they're worse than birds in this regard
not aimed at just you, i'm too lazy to quote everyone saying to trap the cats... feral cats aren't wild cats, or tame cats that just prefer living outside, they're vermin who kill domestic animals and are leading to the extinction of their prey species. they spread disease to humans and by killing local bird/bat/reptile populations, they contribute to mosquitoes spreading malaria/zika/west nile/yellow fever. trap-release-neuter is ineffective/goes against everything we know about wildlife management, we only do it cause feral cats are cute, they should all be culled.
this is also misguided policy cause feral cats kill way more than they eat and leave the carrion out for urban scavengers... like rats.
cats seldom prey on mice and aren't particularly good ratters anyway, even dogs are better.