Storing hay indoors generally offers superior protection compared to using hay covers alone. Indoor storage, such as in a well-ventilated barn, shields hay from weather conditions, moisture, and pests, creating a controlled environment that helps maintain its quality. In contrast, hay covers provide protection from elements like rain and sun but may not fully prevent issues related to humidity or pests if not properly managed.
So, while hay covers can be effective for outdoor storage, they require careful application and maintenance to ensure they remain intact and provide adequate ventilation. It's also important to note that hay and straw are highly flammable, especially when stored in large quantities. Hay can generate heat as it decomposes, potentially leading to spontaneous combustion.