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.
they have trash but I don't know the details on how often it gets picked up, it always seems near full when I go there, but afaik it is getting picked up.
Food is going to be a problem. It was more organized in the past, with a central kitchen tent with storage at least off the ground, and some progress made on containers, but now things are way less organized, if any food is kept on hand it seems to pretty much live in people's tents, cause I don't see it when I go.