To properly sanitize your stones, we recommend you boil in water for 1-3 minutes. By heating the stone to boiling temperatures you kill all possible contaminants that may be hidden within the micro-pores of the stone. Boiling also greatly reduces clogging issues by helping to remove sugar residue. If boiling is not an option, we recommend soaking in Star San, which will remove the majority of surface contamination/bacteria, but will not sanitize the interior of the stone which may or may not be contaminated.
Important: You do not want to touch the stainless stone portion with your hands. The oils on your fingers can actually clog the small pores in the stone.