Don’t let your cats roam. Especially if you don’t want them places they shouldn’t be. It’s irresponsible and there are mountains of data on why it’s bad. But an anecdotal one from me, I live in a c complex in a residential neighborhood, where we often see roaming cats. We also see them dead after they ingest poisoned mice from nearby businesses, and get eaten by coyotes which are not uncommon around here.

Aside from that, it’s just terrible for the environment and ecosystem.