I have half a bag I bought about a year ago. Have not used it in about half a year. Had it in the cabinet in the original bag it came in. I am going to have to use it but it smells funny. When I say funny I am not sure how it is supposed to smell because I only used a little bit of it about half a year ago to a year ago but it does smell funny. When I say funny maybe it's supposed to have a smell to it but since I have not used any of this stuff in about six months or more maybe I did not remember if there should be a smell to it.