Smartlab That's Gross Science LabRecommended Age: 8+ Creating fake boogers? Stink bubbles? When it comes to kids, "ick!" makes scientific principles stick! Twenty revolting experiments give kids a puke worthy preview of basic chemistry, including polymers, diffusion, reactions, gas expansion and more. Includes mechanical toilet bowl mixer with "flushing" sound effects, trashcan beaker, toxic waste can beaker, rat shaped eyedropper, worm stir stick, bubble wand, a filthy work tray and