Foxes are very difficult to trap, and really, they are very useful in controlling other things, rodents, etc, that might get out of control. We've found that being persistent in making lots of noise, varying times when we go outside, banging pan lids, firecrackers, singing, yelling, honking horns, talk radio, etc, etc, anything to create a disturbance or a repellant at various times throughout the day which are normally quiet, will eventually discourage the fox from coming around. We have to do it for a period of weeks, and it's a pain, but it does work. Based on past experience, I have mapped on a calendar the times during the year when foxes are most likely to visit, and it is pretty regular, so we know when to start watching out for them. They don't terrorize the flock all year round...at least not so far.
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