Sponges Trash Container Do Not Recycle Generic sponges are made of plastic and are not recyclable. Ways to Reduce Use Natural Cloth Sponges Instead Use reusable sponges made of natural fibers — such as cotton, linen, burlap and jute — that can be tossed in the wash with your laundry. Avoid sponges made from “plant fibers,” as this often means bioplastic.
