There is no definitive point where one is able to predict when a specific diet will spoil or become deficient in one or more nutrients. The common guideline of a six month shelf life is based on longstanding practice in North America. In Europe and Asia, differences in local practices and regulatory oversight have led to Teklad standard natural ingredient diets being routinely used out to nine months and sometimes 12 months post-manufacture. This practical experience, along with literature support and vitamin testing over time, gives us confidence that these diets continue to support animal health and study integrity out to at least nine months post-manufacture. Please refer to your institution for guidance if you are unsure of local policies.

Recommended storage conditions:

• Cool and dry; at or below 70 degrees fahrenheit with humidity ideally below 50%, but up to 65% is acceptable
• Clean and free of pests
• In original packaging or in a container that prevents continuous exposure to light and minimal exposure to air

In general, nonhuman primates will consume an amount of diet equal to four percent of their body weight but there are many factors that can affect daily consumption including species, life-stage, housing, and environmental conditions. Small amounts of fruits, vegetables, or nuts may be fed as environmental enrichment. Clean fresh water should always be available.