Twist Biodegradable Loofah Sponge cleans all the grime and grit and is completely safe to use! Artificial colors.  Plastics. Chemical dyes.  They're in your kitchen.  Not in the pantry, but over by the sink.  Like that neon yellow sponge with the bright green scrub side.  We have a feeling that's not exactly natural.  Unlike our sponge, which shows its true colors: unbleached, undyed white cellulose and tan, scrubby loofah.  And it's biodegradable, just like the food it cleans up after.