Curious... in General questions, advice and comments about pheromones Posted February 19, 2009 · Edited February 19, 2009 by Vivica I know I have asked this question many times myself. What I remember from mara was that keeping the oils in a normal temperature in a dark place was best. That too cold or too hot isnt good so do not put them in the fridge. Also that the oils alone are good to about 6 years and up since resins can last for decades , and that when the pheros were tested at a 3 year stage they did not show any sign of breaking down. Hope I remembered correctly so far.