Product review (5 stars): Life changer!!!
These things have changed my life. I got these instead of the Boveda packs because I read a comparison study somewhere between the two and the Bovedas tested positive for the potential to seep hazardous chemicals. Not sure if that's true or not, but hey. Better safe than sorry I suppose.

I live in Phoenix where herb dries out stupid fast. Even just after a week of using these things I saw drastic change in the quality and longevity of my herbs. Also from my experience thus far, these packs last quite a long time. I have been using the same ones for well over a month now and the indicators say they're still going strong. I swear by these Integra boost packs, now, and tell any of my friends about them when I get the chance.