I live in Pennsylvania and my brother lives in Maryland, and his drip tip to his vivi nova was loose so I sent him a used one in a little zip lock baggie wrapped in a paper towel,and he received the package/envelope except it was broke into and everything was present except the drip tip.This is very strange as It might have been checked with the Post office and taken out.I wonder if they take something like this thinking its drug paraphernalia and then have it checked at a lab somewhere??It was in a little baggie, Strange.