S.D. Codified Laws § 43-8-9
Current with legislation signed by the governor on or before 3/6/2024
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.
SDCL 43-8-9