Good advise. That's scary and unfortunately far too common. I'm blessed with an enormous , very ventilated loft, if I packed it tight I could fit 2,500+ bales in there. Last year I bought straight off the field hay (and probably will this year as well, because my house is located between my hay guy's fields and his home location, he gives me a deal because he can bring it straight to my place - he also helps unload and stack for me. I love my hay guy!), but since I only bought 700 bales there was plenty of room to spread the bales loosely and allow them to cure.