I keep mine in the fridge, and pull one out each day. I allow it to warm to my body temp by holding it in my pocket or tucked into my waist band, and use when its ready.

they say it can be kept at "room temp" for up to 30 days. I guess I dont trust that. Why would they ship it cold, and put pershisable stickers all over it, if its truly ok at room temp? I dunno, im not taking chances. I keep it in the fridge. They have a nice fridge box that hold a 30 days supply.