ACtually, that's a fantastic question. Salt has gotten a bad rap of late, and it's really too bad that that misinformation has taken hold in our culture. Salt is one of the most life-saving compounds there are!!! It should be natural Sea Salt , not white, refined or with Iodine added. Celtic Sea Salt is a good one.
Salt makes the body more alkaline. Yeast hate that. Salt is a disinfectent. No one need buy Listerine, gargling with salt will do the same trick.