A dryer sheet tucked inside a mailbox can look like a piece of laundry that took a wrong turn. Yet someone may have placed it there deliberately, hoping to discourage insects, spiders, or other unwanted visitors. The idea circulates widely among homeowners, but the explanation deserves a closer look.
Dryer sheets carry a noticeable fragrance, and some people believe that scent discourages pests from settling inside mailboxes. That sounds convenient, especially if you have ever opened your mailbox and found a spider waiting among the envelopes. Unfortunately, a popular household tip does not automatically qualify as a reliable pest-control method.
