South Dakota Codified Laws
Chapter 08 - Present Estates In Real Property
Section 43-8-9 - Written notice to terminate estate at will required--Manner of delivery--Posting on premises.

43-8-9. Written notice to terminate estate at will required--Manner of delivery--Posting on premises.
The notice prescribed by §43-8-8 must be in writing, and must be served by delivering the same to the tenant, or to some person of discretion residing on the premises; or if neither can, with reasonable diligence, be found, the notice may be served by affixing it on a conspicuous part of the premises, where it may be conveniently read.

Source: CivC 1877, §240; CL 1887, §2756; RCivC 1903, §263; RC 1919, §333; SDC 1939, §51.0502.