The sign on State Highway 12 road works at Dargaville warns of cement stabilisation and advises motorists to wash their cars promptly.
That's a good idea, says Turiwiri sharemilker Michelle Pattison, but she would like to know what to use to do the washing when the Kaipara district - along with the rest of the North Island - is in the throes of a drought and local authorities have imposed restrictions on water use.
Downer, which is doing the road works, didn't have an answer. Their contracts manager, Brad Flower, said he couldn't comment because the job was a NZ Transport Agency contract. He referred the Northern Advocate to Grant Clark from Opus Consultants.
But Mr Clark's lips were also sealed by the job being a NZTA contract.
"I'm at the bottom of the food chain clinging to the lowest rung on the ladder so I can't help with this one," he said apologetically.