What are some common problems encountered when trying to clean a kneaded eraser?

Shop the Koh-I-Noor Kneaded Eraser SUPER EXTRA SOFT in Case 6426 here for the lowest prices at Cass Art. A kneaded eraser has many capabilities, but the main capability I am thinking of is erasing lighter lines while preserving the dark lines. Description: This traditional kneaded eraser is excellent for removing or highlighting pencils, chalks, charcoal and pastels. It kneads into any shape, removes ... These pliable erasers are easy to knead into any shape for precise removal of charcoal, pastel, chalk, and pencil marks. Blick Kneaded Erasers are ... Kneaded Erasers ... Kneaded Erasers are excellent for highlighting and cleaning chalks, charcoal, pastels, and colored pencils. They remove dry media only. The ... Prismacolor Kneaded erasers are soft, mouldable and incredibly effective at removing pencil marks from paper. They come in three different sizes, the extra ... CRETACOLOR Kneaded Eraser. The ideal kneadable eraser to remove any pencil lines from all papers but especially gentle on watercolour paper. Remove all ... After you use the kneaded eraser, it will appear to have tons of charcoal in it. The eraser will absorb the charcoal and clean itself if you simply stretch it ... Brea Reese Kneaded Eraser, 1-3/8" x ... Most people associate the term “eraser” with a pencil eraser. Pencil ... You can get bad ones though, if they're super brittle or hard it's a sign that they're not the best. It's a good idea to always keep them stored in some dry ...