I tend to think that the urban fox, is a fox in the wrong place , it is there as it can survive . eliminate the food and stop feeding them and after a few years they will revert back to doing what foxes do (hunt rabbits and take your prize chickens) . I mind chatting to a game keeper that was out lamping foxes one night , he turned on his lamp in the middle of a field and couldnt believe it when around 12 came running at him , he thinks its urban fox that have been taken up the glen and dropped off. the lamp going on must be like a security light going on and they think they will be fed . stop feeding them and they will move on. We are doing the same with seagulls , look how far they are inland now , our program with them is to take the eggs as they nest every year in the same place they are hatched . The program is to keep taking the eggs till the ones that were hatched there die and then the link will be stopped and cut down the population of gull nesting on roofs . as a gull lives for 30 years this is how long it will take to get results . same can be done if people dont feed foxes they are wild animals and will fend for themselves and move to where food is (in the countryside where they should be