Louisiana's state health department issued a warning about neti pots - which look like mini watering cans, that are used by pouring salty water through one nostril.
It follows two recent deaths - a 51-year-old woman and a 20-year-old man from the 'brain-eating amoeba' Naegleria fowleri.
It is thought the amoeba entered their brains when they used the devices.
Both victims are thought to have used tap water, instead of distilled or sterilised water as recommended by the manufacturers
Neti Pot Demonstration Video
Edited by Rogerdodger, 16 December 2011 - 11:14 AM.