undesirable

— Barskiven Road was The Undesirables. Bad corporation tenants (didn't pay their rents, didn't dig their gardens, let their kids smash up windows) were transferred to The Undesirables until they showed they'd improved. His mother called them scum. Barskiven Road houses had all-metal fittings. Only the window panes could be broken, unless you had a blow-torch. McCann said they'd have them, soon. At the dancing blokes always made jokes if they knew a dame was from The Undesirables. It was supposed to be the worst street in the whole of Kilcaddie.

— There would be no need for any of the animals to come in contact with human beings, which would clearly be most undesirable.