In message , Sharon
writes
I'm not clear as to whether it is the dog chasing the fox out of the
garden or simply the dog's scent in the garden that is effective. I
had hoped the latter.

Definitely not. We've had two dogs for years, and still have one, and
the foxes are always in the garden. Two of them mated on the back lawn
for an hour last week (even though they have 7 acres of orchard behind
us where they could have canoodled)!

--
Klara, Gatwick basin