The following is a link which contains some other links of past rat focused topics. You might find something useful amongst all that. Good luck. I know how annoying it is having rat/s around, especially when any hogs left especially need the food at the moment to potentially get ready for hibernation. If you do try humane traps, make sure that the hogs can’t access them – they can get caught in them. I have a feeling that it may not be legal to release any rats that are caught, in a different place.