I ran in today to the sawdust location to get the 3 freebies from the magic coupon machine (I only got 2) and they were out of the items on the shelves, so I asked what do I do since the coupons expire tomorrow. The checker said I could still get the items up to 30 days from the expiration date because they were CVS coupons. Who knew? I asked if this was true for CVS ECBs and she said yes. I wish I had known that when I first gotten started doing the CVS ECB game.
YMMV means your mileage may vary.
Let me know if that works for you.