I should add that when we dealt with small squares, we always lost 10 to 20 per year due to mold. Since moving to large squares, no bale loss. We are feeding it pretty rapidly. Farmer stacks 10 bales in one row, two high and they're gone before 2 months. LOVE this system. No back-breaking stacking in disgusting heat, no worry about pattern when stacking, no mold. We'd love a hay shed, but it's not in the budget any time soon.