Most ferrets will bimble on down a hole and flush bunnies out for you. Some will do it at speed, some will take their time to clear each level, some will wander about ramdomly until they come across a rabbit. Most ferrets will work to some extent, as their natural curiosity will get the better of them.
If you're after workers, buy kits from working stock i.e mum and dad are proven rabbiters. It's not always as cut and dry as that, but it's a good place to start. If you buy shit, you generally get shit.
Having said that, I have a hob who is mainly a pet and hardly ever worked. When I d