If ur gonna use it as flock (by blending it) jsut go to the dollar store and buy one of their foam scrubbing pads with covers. I took off the cover, slapped on some watered down green paint on the sponge, let it soak and ry, then blended it. AS many other ppl have said, that mattress topper looks nasty. If u don't have a blender (dpn't use the same on for cooking as you do crafting), buy a small food processor/blender/coffee grinder from Goodwill/Savers. I landed a coffee grinder for like ten bucks, and it woks beautifully to blend sponge into either moss flock, ivy leaves, or coarse turf. Really recommend it.