Hello all. This year is my first year with my pellet stove, which is my back-up stove. I think I went over on buying pellets this fall, I bought one ton of pellets at 3.49 a bag plus tax. Well i only use this stove in the mornings to take the chill of the living room area. I have burned about 3 bags so far and 1 bag was just to burn the smell out of the stove. So how long will these pellets keep in my NOT heated garage? I do have them stacked in my step's going down to mid level of my family room. Thanks Fespo