Have the inmates improvise and build some rat traps since they have nothing else to do. Make those little boxes with openings into dark tunnels they love and install one way doors inside. After caught dip them in water and drown them. Improve them by using steel metal aluminum hot-soldered together. No need expensive pest companies. Improvise. I suspect the rodents are hiding in the floor drain holes. Mice from the sink drains and rats from the toilets. Cockroaches and rodents live together. At dawn they all run back into their sewer holes. Look for their footprints. The construction noise is irritating the vermin in the pipes so start thinking how you can catch or kill them there. These vermin problems are not only in prisons but also your homes. In your pipes. I like to dilute yard poison and pour them down my drains every month to keep the insects under control. The roaches are smart and come out at night when you're sleeping.