Here are the results of our feeding calculations. Feel free to use them when ordering feed, it should be close to what you would need.  This is when keeping hay in front of them all the time, and giving treats about 2 to 3 times per week.

-Per Chin -

WHOLE GRAIN SUPPLEMENT:

Per Day: 8 grams  (1 heaping teaspoon per day)
Per Month: 243 grams or .54 lbs
Per Year: 2,920 grams or 6.43 lbs

CHINCHILLA PELLETS:

Per Day: 28 grams
Per Month: 852 grams or 1.88 lbs
Per Year: 10,220 grams or 22.5 lbs

Numbers have been rounded off, should suffice for ordering feed.  Environment, activity, pregnancy, etc will all cause variations but these figures should get you very close to what you will need and not have excess feed getting stale. Suggest using all the feed on hand within 90 days to keep it fresh. Feed can also be refrigerated to prolong freshness in an airtight container. We are happy to mail order small quantities, just email us your order. We mix up our whole grain supplement ourselves on an "as needed" basis to insure freshness when you receive it and do recommend it be refrigerated or placed in freezer upon arrival.