well only cleaning them out once a fortnight poor things would you like to live in your shit with the stink especially this time of year ,i would prefer to cull than to think they would spend the rest of their lives living like that ,now whats humane .If i no longer could keep my ferrets for some reason i wouldnt rehome them unless they were close friends other wise i would have them P.T.S so at least i knew they wouldnt have a long shitty stinky life