multiple wasps will be hanging out at the back of a mailbox, unbeknownst to your mail carriers. When they reach their hand inside the mailbox to deliver your mail, these wasps become aggravated and will often sting. This particular mail carrier was stung on 10 separate instances delivering mail one summer.
dryer sheet in a mailbox
source: Free Country Chicago
A Simple Trick to Keep Wasps Away
So, what can be done about this? Well, mail carriers have found that wasps absolutely hate the scent of dryer sheets. As a preventative measure, they will sometimes stick a dryer sheet in the back of your mailbox to prevent wasps from making a nest there. So if you see a dryer sheet there, leave it be! The mail carrier notes this should be used as a preventative measure only, and an existing nest likely won’t be deterred by a dryer sheet. As
