Episode Title:
Ploot.
Episode Description:
Lilo tries to clean Pudge's grotto for Earth Day, but meets an experiment that eats trash and later redistributes it across the island as pollutant goo. When Stitch gets sick from eating trash, Lilo must find a way to stop Ploot by herself. Eventually Stitch is cured and thanks to Pleakley a way to defeat Ploot is found through a combination of air fresheners. With help from Stitch, Lilo defeats Ploot herself and he becomes good and sets to work at cleaning up trash and pollution rather than making it.
