Turn it on 24/7. It’s designed to be “always-on”.
No worries, it uses less than 6.5 watts/hour.
Shut all doors and windows.
Treat it like your “fresh-air” producer.
You don’t want you “fresh-air” to escape.
No air fresheners and fragrances. Remove them.
They add on to the “workload” to be sterilized.
You will experience “Medklinn fresh-air” soon.