The best way I have found over the years is to bait, trail cam, and observe when the foxes are active.
With bait the key thing is to keep the fox engaged for a while, otherwise the bait is a bit of a take away dinner. You want them to come in, sit down, and dine for as long as possible. So, what I do is take a shot pigeon or rabbit or anyhting that a fox would feast on open up the carcass then using some wire mesh fencing cover the carcass and stake the fencing to the ground. You can use sharpened sticks and hammer them into the ground. You can either bait and wait at this point but i find its better to bait then capture the activity on the trial cam. This gives you details of the number of foxes visiting and more importantly at what times.
With bait the key thing is to keep the fox engaged for a while, otherwise the bait is a bit of a take away dinner. You want them to come in, sit down, and dine for as long as possible. So, what I do is take a shot pigeon or rabbit or anyhting that a fox would feast on open up the carcass then using some wire mesh fencing cover the carcass and stake the fencing to the ground. You can use sharpened sticks and hammer them into the ground. You can either bait and wait at this point but i find its better to bait then capture the activity on the trial cam. This gives you details of the number of foxes visiting and more importantly at what times.







