dryer sheet sitting neatly inside a mailbox probably wasn’t dropped there accidentally.
Someone may have been trying to deal with a recurring insect problem.
The Bottom Line
If you find a dryer sheet inside your mailbox, don’t panic.
It may have been placed there in an attempt to discourage wasps from making the mailbox their next nesting site.
But because the effectiveness of dryer sheets as insect repellents isn’t well established, don’t depend on the trick if you actually have a wasp infestation.
If you see repeated wasp activity or
