Quote:
Originally Posted by
Ich_Dien 
Adding moisture inside a shoe isn't the best approach...
You add moisture with each wear

, sorry to say. On the other hand, if it is about a pair of shoes that was worn by an unknown person, I just prefer to be on the safe side - if totally obsessed you can add a silica pouch to absorb moisture. And use for a time a anti fungal talcum powder ....