This sign would be appropriate at your main office and as guests enter different areas of your park. Or combine with #R-10 garbage pail symbol and #M-1A brown arrow as a polite reminder of where your trash receptacles are.
18"x12", steel, predrilled top and bottom, rounded corners. Non-reflective. Bonderized, primed, baked enamel finish and epoxy coated. White on brown. Will last for years.