Robots from Neptune (2019)

Deep within the icy cloud layers of Neptune live the X-tonians: a mighty race of silicone-based lifeforms who regularly breathe a toxic mixture of methane and carbon dioxide. However, their world is dying. The factories of their highly industrialized society continually belch great plumes of clean air into the atmosphere bringing the X-Tonian race to the brink of extinction. In desperation, His Majesty King XYY9Z3 dispatches his horde of Receptacle Robots to Earth. Their mission: to liberate and harvest all of our garbage, toxic waste, and pollution, leaving a wake of clean destruction behind. And you might think we'd be okay with all that.