My mother told stories about living in a house on a river with huge rats. When they moved in they put rat poison in oatmeal and scattered it in the attic. After they cleaned them out of the house and repaired the house she said they only had to regularly put out something to keep the rats and mice away.
Rat poison and traps work pretty well, for them to be so bad are the tenants just waiting for someone else to do something?
It’s GOVERNMENT HOUSING....................