are the ferrets hungry before you take them? someone has found a ferret on rabbiters.co.uk have a look,,,,id put posters up every where,all around the area for atleats half a mile,,youv already set cage traps havent you,-my ferret escaped a few years back and thats how i caught mine,,try getting some of hers and the ferrets shavings from the piss + sh*t side and spead it arount the area,,, n near the traps with food inside,,,,,id dig that whole warren out,,,,iv known a ferret to be found a week later lasting on one rabbit,,,,good luck finding her mate atb ft