Do these UPC codes ever expire? Like if I start buying Langers now will the codes still be good a year or two down the road when another deal like this comes up? If so I'll start stockpiling.

I got one bottle so far to taste test for $2.99 at Safeway - Apple Strawberry - actually it is pretty good. Next time I go to the next town over they have a 99 cent store so I'll check it to see if I can do better. Confirming that Dollar Tree did not have any though.