S.C. Code Ann. § 47-21-230: Unlawful entry or presence with notice to not enter or leave.

(A) Without the effective consent of the owner, it is unlawful for a person to enter or remain in a crop operation with the intent to disrupt or damage the enterprise conducted at the crop operation, and the person:

(1) had notice that the entry was forbidden; or

(2) received notice to depart but failed to do so.

(B) For purposes of this section, "notice" means:

(1) oral or written communication by the owner or someone with apparent authority to act for the owner;

(2) fencing or other enclosure obviously designed to exclude intruders or to contain a crop; or

(3) a sign or signs posted on the property or at the entrance to the building, reasonably likely to come to the attention of intruders, indicating that entry is forbidden.