Every one of these cats was on a kill list.

Feral cats can't be adopted, so a shelter puts them down within days. Cat City fixes them, collars them, and puts them to work. Scroll — she's wearing it.

30 grams. Breakaway. Talks to the whole city.

A Meshtastic LoRa node on a breakaway collar — snaps under load, so no snag can hurt her. GPS, a climate sensor, a tiny vibration motor. $0 a month, no tower, no cell plan.

Fix 80 % and the colony ages out on its own.

Below that line they out-breed you. Above it, births stop and an outdoor colony ages out in about twelve years — no round-ups, no euthanasia, and a count the council can check.

Buzz means food. The cat comes home.

Three weeks of buzz-before-food and she walks into the feed station on command — battery swaps and vet checks with no re-trapping. Litter at the base station earns a treat. They learn it fast.

Safety first. Oh — and we moved the fam here.

A colony in a bad spot — a highway edge, a demolition lot — moves as a family to a safer site, and the collars mean nobody gets lost in the move. Where they park at 3 AM is where the rats are; heat, air and a ground-floor radio map ride along. Meet the night shift.

A yard with a working cat has no rats. Ask any warehouse.

Sterilized, vaccinated, collared, placed with a host who feeds them. Breweries, logistics yards, grain stores, city corp yards. Every working cat was on a shelter's kill list the week before.

Cats don't line up for it either.

The pigeons sign themselves up by the hundreds — the pigeon community is back to work, and word got out fast. The deer would rather not. The cats show up for the buzz and pretend the whole thing was their idea. That's fine. That's the data.

Check out Cat City.

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