I have included an image because I knew its obligatory for AIBU. This is a combination of a neighbour issue and a rat issue so open to advice and input on either.
We live rurally in quite an old house. Next door is another old house with a huge garden and an outbuilding that forms part of our boundary (red square), the outbuilding has attracted rats for as long as we've lived here. Until about 6 months ago the neighbors where a lovely old couple and between us we dealt with any rats moving into the outbuilding quickly with posion, blocking holes and on a couple of occasions when things got bad a pest control company.
Usually it would be a problem only a few times a year. The old couple downsized and the house was bought by a buy to let landlord, new neigbours moved in and seemed friendly enough we've had no issues until a month ago when I started to see rats running up and down the outbuilding wall again.
I went over to tell them and explained how this is usually resolved and they said rats in the building didn't bother them as they have no intention of using the building and they didn't want to put poison down. Since then the number of have rats has escalated, my office looks out over the building and everyday I see multiple rats coming out from under the roof, down the wall and into my garden. Neighbours are still refusing to do anything, I have offered to pay for the posion, put it in the roof myself, pay a professional pest control company to come sort it. They just keep saying its their property and they aren't bothered, of course they aren't because they can't actually see the building from their house and don't use that part of the garden.
Its really awful, I can't go in my garden without worrying about the wee and poo they leave behind, I can't sit at my desk without getting distracted by 10+ rats running down the wall and its really only a matter of time before they end up getting into my house despite me checking for holes, chew marks etc. everyday.
I am pretty sure I ANBU but perhaps I am.