Salt in Summer

["Craig W. Hadley" <willard@eagleut.com>]

Hi, just a quick question??  When you all talk about adding salt to your
horse's diet, what kind of salt are you using?  I'm not sure if I should go
out and buy a special kind or just use normal table salt?  Also, how much?
when? why?
Thank you so much,
Carrie and the gang