I usually feed my chinchillas this oxbow
http://www.petsmart.com/product/index.jsp?productId=3135798&utm_source=googleproduct&utm_campaign=3135798&utm_medium=cse&mr:trackingCode=D9D22C64-C881-DE11-B712-001422107090&mr:referralID=NA#prodTab1
but when we went to petsmart they only had this one...