What are these?
Pic is of a roll of paper towel for scale. Have seen a few of these mostly in my bathroom (in Southern California) and am wondering if these are cause for worry or just normal occasional springtime appearances. Any idea what it is?
Pic is of a roll of paper towel for scale. Have seen a few of these mostly in my bathroom (in Southern California) and am wondering if these are cause for worry or just normal occasional springtime appearances. Any idea what it is?