Excuse me ma'am/sir you probably didn't realize, but you won't be allowed to wear your hoodie while inside the library.
Excuse me ma'am/sir you probably didn't know, but hoodies aren't allowed to be worn inside the library so would you please keep it down while your here.
Sometimes you can just use a hand gesture to the patron to take it down and they will comply.
Always give the patron a few minute when they come in to remove their hoodie themselves. Most patrons will wear their hoodie up as their coming in, but will remove it soon after they have arrived. If it appears that the patron is going to continue to wear it please approach the patron and inform them about our policy.
Know this policy and be confident in enforcing it!
Knowledge = Confidence