Corning recommends cleaning the UniCam® Connector end face after termination, but before installation into the adapter, using either an alcohol wipe or an IBC port cleaner, part number CLEANER-PORT-2.5 for SC and ST® Compatible Adapters and CLEANER-PORT-LC for LC adapters.
Corning recommends cleaning adapters as well, using part numbers CLEAN-STICKS-250 for SC and ST Compatible connectors and CLEAN-STICKS-125 for LC connectors.