If Sarita is online, I’d like to direct this question to her since she’s worked with these people before:
I have a 45 pound box of 3rd cut timothy that I bought back in November with my other one from KMS. It’s been sitting in my family room, nice and dry, in it’s box since then. I just finished my other box the other day.
Would this hay still be okay to give the buns? It’s been sitting sealed in it’s postal box for three months. It looks and smells okay to me, but how would I tell if it had gotten moldy? Is there anything besides mold I should worry about having gotten into it?
My buns are starting to balk at the bulkier hays I’ve bought recently, so I think they’d like to have something soft to chew for awhile. I’d hate to think I should’ve had this stored somewhere else and it may not be good now. 
Our supplier wraps the bales in black plastic garbage bags, but not so tight that no air gets in. Sarita, since you get this hay too, I’m curious how long you store it before disposing of it, uneaten or otherwise.
The other box seemed to be fine all this time, but as I got to the bottom, the quality degraded just a bit. Probably only because it was the hay on the bottom. ^_^
Many thankies!