Choose No Trespassing Signs specifically for Oklahoma residents. Signs are printed with state statute OK Stat. § 21-1835 to let trespassers know they are defying the law. Heavy-duty aluminum gurantees that signage will last for over a decade, with resilient ink graphics by 3M. Note Oklahoma rules state that the posted signs should read messages such as "No Trespassing," "Property Restricted," or "Keep Out." On unfenced or fenced property, the signs must be conspicuously placed at all points of entry. Click on the signs to learn more.