I have the Scentlok liner for about 5 years. I think that initially they worked wonders. However, as my suit got older its effectiveness diminished. I was told by both Scentlok and Scentshield reps that 5 years is about the max. Bottom line - I definitely think they work but I still do my best to be scent free and watch the wind. To me the scent adsorption products help tip the scales but that alone is not enough.

Good Luck!