![Opened up this guitar case after many years and found the sound hole covered like this. What could cause this? I see dried up small wings and small droppings in the case Opened up this guitar case after many years and found the sound hole covered like this. What could cause this? I see dried up small wings and small droppings in the case](https://preview.redd.it/039d47r64ed91.jpg?width=640&crop=smart&auto=webp&s=b7fc76db357c0f108894f3b7f899e31c14ac184e)
Opened up this guitar case after many years and found the sound hole covered like this. What could cause this? I see dried up small wings and small droppings in the case
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