how long to keep salt/baking soda solution

[Guest guest]

Hi again,

I also want to know how long the salt/baking soda solution keeps? It

seems to keep okay, but I didn’t know if I should make it fresh every

couple of days.

Sometimes I just use it to spritz my nose when it feels dry, so I

don’t use very much in a day.

Thanks again†"

Rhe