yes i use it..i get it from North American Kelp (they have a web page..think it's something like NAK.com) which is a company located right here in Maine that harvests and packages it . They do ship all over the country. I learned about it from my friend who i purchased oneo f my dogs from. she lives in Idaho and she was ordering it. I thought it was great because i lived so close to it. You can buy 50lbs bags for like $21.00. With shipping of course it would probably be more but it's great stuff. makes the coat shiney and hooves stronger. It's the same stuff as like Source only far cheaper! 1 50lbs bag of it lasts a LONNNNNGGG time. I had 5-8 horses and it usually lasts me more than a year or so.
I"ve also used it on my dogs with good sucess..they really seem to like it too.