Make cleaning fun with Ocelo™ sponges in fresh, vibrant colors! Ocelo™ sponges use 3M's unique antimicrobial StayFresh™ technology to resist the growth of bacterial odors through hundreds of uses. Ideal for household cleaning task. O-Cel-O sponges use 3M's unique antimicrobial StayFresh™ technology to resist the growth of bacterial odors through hundreds of uses.