N.C. Gen. Stat. § 106-358

Cattle, horses or mules infested with or exposed to the cattle tick (Margaropus annulatus) the owner or owners of which, after five days' written notice from a quarantine inspector of such animals as is provided for in G.S. 106-357, shall fail or refuse to dip such animals regularly every 14 days in a vat properly charged with arsenical solution, as recommended by the United States Bureau of Animal Industry, under the supervision of a quarantine inspector, shall be placed in quarantine, dipped and cared for at the expense of the owner or owners, by the quarantine inspector.