i have some of the fresh earth that have to be about 8 years old and they still smell like new ! i did however get some new ones too , being i only put one on my hat when i'm hunting i try to rotate which one i use , then when i'm done it goes right back in the container ,on occasion i forget to put it back in the container , as soon as i find that out i'll switch it up , i just keep swapin them out so every time i go out i have a fresh one on my hat!