The alfalfa/Timothy mix (because it is a mix) is usually just fine to give your chins, even if the same type of hay is in their food. The freshness of the loose and/or cubes have not gone through the processing the pellets go through. The more the processing of any food, the more it looses in nutrients. The loose and/or cubed hay give your chins the satisfaction of chewing and should be kept in their cage 24/7.
Simple rules about hay:
(1) Always remove any left-over hay after 24 hours and replace with fresh hay. Don't try giving your chin to much hay at one time, but make sure he has constant access to his hay. He likes that special attention each time you bring him his hay.
(2) Always remove any hay that gets wet from water or urine. Hay will mold quickly and needs to be as fresh as possible. Wet hay breeds bacteria! Learn where your chin usually urinates ... place the hay at the other end of the cage. Hay holders are great for keeping hay dry!
(3) Always check hay just before giving it to your chin for any musty, moldy or sour smell. If there is one ... dispose of it.
(4) Look for any grayish spots on it ... this is usually the beginning of mold ... if you find any ... dispose of it.
(5) Always try to get the freshest hay possible.
(6) Do NOT store hay in an air-tight container! Hay needs to breath.
(7) Always store hay in a cool dry area of your home.
Jo Ann