Cold Life Stain & Odor Remover for Reptiles The Cold Life No-Scratch Sponge is a tough sponge designed for tank and terrarium scrubbing Made from non-abrasive material, safe for use on glass surfaces Cleaning is simple with these strong sponges that easily remove grime from terrariums Reusable and washable Pack of 3 | Dimensions: 4.25" x 4.75" x 3.62"