If my ferrets could crew through chicken wire I wouldnt be surprised if they also donned big red capes and flew around saving the world every night after I'd gone to bed.
BS mate
I lost my first ferret after he chewed through the chicken wire on his box, too. Belting little silver hob he was, tame as a puppy. So it seems you're in the minority there mate. Galvanised weldmesh was the only thing I'd use from then on.
100% chicken wire is shit mines ate through even doubled up now they,re workin it s a lot quieter in the garden