Upvote:3
If in doubt, declare. You can lose Global Entry/Sentri/NEXUS if you misdeclare and are caught.
Anecdotally, my experiences have been that they want you to declare anything edible. Pet food counts. Snacks count. Fresh produce certainly counts and must always be declared. Chewing gum... probably doesn't count.
Upvote:5
After researching further and reading several discussions on the subject, it appears that the questions about food is ambiguous and CBP agents are not consistent in their advice. This question was intended to prevent revocation of GE permissions due to breaking the rules with a secondary purpose of not annoying CBP agents.
The general consensus seems to be that CBP agents may take opposing sides in the clarification of what defines a declarable food, and that the best method to ensure that GE status is not revoked is to always answer 'yes, I have food' if you are carrying anything that goes into your mouth. Some people suggest that this even extends to items like alcohol (likely) and medicine (dubious).