Hello i am interested in how long a spit swab lasts and how one could make it last longer than the 3 years ive found it could last
i am also interested in why the spit can not be used after longer time

this is purely for experiments please dont ask or say anything unrelated to the matter

also someone mentioned a man called dexter i wonder if anyone could tell me his last name? the friend from here spoke well of him and i really need any help i could get thank you