Mike from Hutchinson, Ks writes
Since the are only good for 2 years, how old it is should affect its effectiveness.
There is no date on the ActiveGuard Mattress Liners that shows when they were manufactured. Per the manufacturer, there was a recent label change, and if your package does not say "CAUTION" on it, then it is new stock that was manufactured within the last year.
Answer last updated on: 01/07/2017