I am using older grass hay for stall bedding (2-3 yrs old) until we run out of it. Its not very good stuff. It was baled after it went to seed, and I know it does not offer much in the way of nutrition. It is clean and dry without any mold. I have just stocked up on some good hay for the winter. Problem is that they are eating this stuff right off the floor. So am I going to be forced to stop using it? The reason I stall them is to limit their grazing. So am I defeating this purpose? Do you think that they will gain weight from eating this old hay. I do not want to overfeed them. I have been using Equine fresh for a long time. Just trying to save a few dollars. I have used old hay before, but never had them eat it like this.???????