Our absorbers are fresh, top quality. Shop around and you will find that we have some of the best prices you can find anywhere. We do not use the so called "oxygen indicator tabs" because we have found them to be more of a maketing ploy than anything and not a good way to tell if the absorbers are still good. You can have a pack of absorbers that is 90% used up and the 10% that remains can keep the indicator showing that they are "fresh". A much better way to tell is to handle them. An absorber that is fresh will feel like it is filled with soft powder, somewhat like flour. A used absorber will be more hard and brittle and will feel like it is filled with coarse sand. Also, if you leave one out for an hour or so it should feel warm to the touch. They get warm when they are working.