(HealthDay News) -- Nasal irrigation systems, sometimes called neti pots, use a saltwater solution to help tame congested sinuses.
The devices, when used properly, can help moisten dried and swollen nasal passages.
But if misused or improperly cleaned, they can also lead to infection, the U.S. Food and Drug Administration warns.
The FDA suggests using only distilled, sterile or boiled-and-cooled water in a nasal irrigation device.
Here are the agency's suggestions for proper use: