M.D.
It depends on what we have going on for the evening. Some days we are home at 345 for the day (rarely) and others we won't get home until 7 or so. If it's a late night, they know to grab some kind of protein (protein bar, a pack of peanut butter and an apple or celery, cheese, half a sandwich with meat or PB, etc). Some days they only want a pack of fruit snacks and other days they act like they didn't eat all day. So it really depends on them. The only snacks they are allowed to get without asking though are fruits and vegetables.