Just wanted to share something with you guys. I've read a lot about people buying Oxbow and other brand bags of hay. They cost anywhere from $10-$25 for a "big" bag. I would go broke if I used that! I'd have to buy a new bag at least once a week (8 guinea pigs, 3 chinchillas, and a bunny. Hay is their primary food!). I go to the local farm and pick up a bale of orchard grass for $6, like the kind you feed to horses (we have 4 horses so this is easy for me lol). This last months! I just put it in a big trash bag so it doesn't get everywhere. Most of the times the bales are much nicer than what you get in stores. They're fresh and you have your pick. The greener the bale the better! Just thought somebody would find the information useful! The animals also love it much more than the bags (I did buy a bag once when I was completely out). They eat every piece of the orchard grass, it looks like I never put hay in the cage in the morning!