Waste Not, Haunt Not

S3, E3: Richard and his younger brother Stephen, are willing to try anything to design the winning Science Fair project. When their latest experiment goes awry, the boys decide to get rid of the barrel of experiments past, however the Hazardous Waste Depot is clear on the other side of town. Instead of wasting valuable experimental time, the boys decide to dispose of their toxic waste in the nearby bog. To their disbelief, the boys are haunted by their littering.