S.C. Code § 15-69-130
The defendant may within three days after the service of a copy of the affidavit and undertaking give notice to the sheriff that he excepts to the sufficiency of the sureties. If he fails to do so, he shall be deemed to have waived all objections to them. When the defendant excepts the sureties shall justify, on notice, in like manner as upon bail on arrest. And the sheriff shall be responsible for the sufficiency of the sureties until the objection to them is either waived, as above provided, or until they shall justify or new sureties shall be substituted and justify. But before delivery of such property to the plaintiff the defendant shall have three days after (a) such justification, (b) new sureties have been substituted by the plaintiff or (c) a holding by the sheriff that plaintiff's sureties are sufficient, within which to replevy as provided in Section 15-69-140.
S.C. Code § 15-69-130