I don't have a cat (did in the past, was an indoor cat) but there's many roaming my neighbourhood because it's still apparently difficult for Australians to understand how fucked that is.

I'd like to be able to talk to cats.

So I'd go have a chat to them and explain what longer, healthier lives they'd have at home. Free from disease, injury and the risk of being hit by car. I'd tell them to go home.

I'd also explain to them, that if they keep visiting my house, that eventually my dog might get one. And if he doesn't, I'll trap them and take them to the pound because their shit families are unlikely to have chipped them.