when i worked on the E A, we had to gas all the rabbits holes on the river banks .we had farmers writing letters all the time, phoning up about the rabbits coming on to their land doing crop damage ,it was a nightmare. they even had me making one way gates and putting them out for 15 months for moving the badgers on because the farmers did not want them there . its a legal requirement of the land owner or who ever is the tennant to control them, even the local councils have to gas them. so try and get in touch with whoever it belongs to bill .i know this is not what you want mate but if your