Ours is a bit complicated.
Both get a pouch between them first thing, then as I'm going to leave for work they get another half a pouch between them, this gets nibbled at but not eaten straight away, so this is usually left out when I leave. I leave it in the lounge so it stays fairly cool. From when I've been off and at weekends after about 90 minutes of being down its usually all gone.
Milo has biscuits out 24/7 on the work surface where Jess can't get them.
Then at night they have half a pouch when I get in, this is usually eaten straight away. Then they get another half a pouch just before bed, this usually gets eaten up too.