Hello, I have found three of these attached to the trellis in my garden from last year, in a place I grew primarily tomatoes (some herbs, eggplant too). It's beige to brown, about the size and shape of a sand crab shell, and in hardness and texture, it's almost like Styrofoam. As you can see, it's tightly wrapped around the metal fencing. I don't want to destroy it if it's something beneficial, like a spider, but if it's something that eats garden plants, i's like to get rid of it ASAP, as I'm going to plant this year's tomatoes and eggplant soon. Thank you.