My wife uses one to clear out her sinuses when they are stuffed due to a cold. Sinus infections cause her pain. Her doctor recommended it. She uses a squeezable

My wife uses one to clear out her sinuses when they are stuffed due to a cold. Sinus infections cause her pain. Her doctor recommended it. She uses a squeezable bottle. I made sure she only uses distilled water. She dissolves a saline powder in it.