Scotopic Mange
In all but the worst cases, the best way to treat a fox is with mange is in insitu, as it is very time consuming trying to capture a fox, let alone very stressful for them trying to trap, treat and release.
For mange you can get treatment online which can be added to food, so if you arn’y allready feeding the foxes, feed them so they regularly come to you for food. To get the treatment, search on-line for sarcoptic mange treatment, Derbyshire Fox Rescue sell it on eBay,
The issue though with the medication you can get online, as it’s available over the counter, it’s not the most effective however it is better than nothing.
In the worst cases, you need Stronghold, a dog spot on dog wormer that contains Selamectin, this is POM-V and so can only be prescribed by a vet. We cannot supply to you, we are not vets. This can be added to food and repeated on day 14.
Feeding will always help, this allows access to medicate but also takes pressure off them to hunt for food.
It is normal to see fox cubs during the day wandering about above ground from the age of about four weeks. Therefore if you find a cub it is quite likely that it is not abandoned and that its parents or close relatives are not too far away.
If the fox cub is uninjured, in a safe spot and not in danger from traffic please leave it alone.