Christopher Weeks wrote:First, is it bad for the septic? That's very much not my first place to put it, but winter is coming and we have pretty real winters here in northern MN.
I wonder if the salt concentration would be high enough that it could de-ice your walkways? Maybe at a part that is next to a magnesium-loving plant.
The frugalist in me says, "If your feet are clean to begin with, save the soak water for next time."
Magnesium bath salts. Get a spray bottle, mix 50/50 with water and spray your calves and feet.
My mother-in-law made a magnesium spray for us and it has been very helpful. My calves really appreciate it when they are sore.