theres only one way to protect agianst the fox an thats build a very secure run .
it can be expensive but its better to be safe then sorry. my girls are on the allotments right behind my garden an its perfect terriorty for the townie fox , so far touch wood i have not had one single probelm with them and i have seen the paw prints an the poo right on my main fencing so i know they have been checking it out .
i do need to place wire in the ground about 1 foot down around one section of the run which as been weaken by the rats digging under the wire layed down on soil an then the slabs on top i should of done that this weekend but it will have to wait tell next week , but apart from that my run is very solid .