Just wondering how long they are effective for? Forever? Or do they lose effectiveness?
I’d like to know that as well.
Its a good idea to keep them in a dark place at room temperature (not too hot, not refrigerated).
^ Thanks tater, that is really helpful for me. As you know from my other thread, I’m making my second order soon, which will contain full bottles. I don’t want my family members to see them so I’m trying a place where I could hide them 
The to-go ones are easy to hide, I simply put them between the colognes samples that I have.
a rep point for tater 
You are being really helpful to me, thanks a lot.
Just dug up a bottle that I’ve kept for 8 years…! A little smokey but… still works!
In general, colognes tend to last 3-4 years if kept in a dark cool place.
I’m not sure what the of shelf life of pheromones are, which is obviously the more important element of the contents.