[motohagiography]

Rats can find food anywhere in many forms, so instead of poisoning them (which just removes competition for food from the rest of them), addict them to a substance you can control, distribute it everywhere freely and accessibly for a while - and then once a large enough population of them are addicted, you create scarcity in the substance, and they will starve themselves and fight each other and breed less frequently in pursuit of it. If the population starts rising again, release more of the drug to get more of them addicted to it and repeat the cycle.

Spray the sewers and garbage bins with nicotine or seized cocaine or some addictive equivalent. Killing them just kills off the weak ones and polarizes the population, whereas a method like this using managed addiction will keep their numbers down and actively managed.

[lukas099]

Wow, that is sinister. I feel like there is a commentary in here about modern human life, but I'm not smart enough to find it.