One near me is having an issue with rats. I think really they just need better trash pickup mainly, and better shelters in general, but they’ve specifically asked for help getting rat poison. Would bait boxes with poison even make a dent in an outdoor environment like that? I can’t singlehandedly improve the cleanliness of the camp or get everyone rat-proof shelter obviously, but I feel like just going straight for the poison could have adverse consequences and not be effective, potentially.
Cats?
Unfortunately cats aren’t very good at dealing with rats. Mice they’re great for, but adult male rats are shockingly big, cats typically leave them alone
Terriers are what you want for rats
My even my lazy dipshit Boston terrier killed several on the streets of NYC while on a leash, just whenever he got the opportunity
Sounds like you need bigger cats