Some of it has been sitting in dumps for 20 years and is still a sticky goo.
This goo can also bring the competition to a halt.
There was talk of runaway self-replicating machines, or grey goo, as the prince calmly called it.
On occasions some of those plants have produced a stick goo which does not deteriorate or go away, it does not get hard or wash away, but simply stays there.
When its time is up, it starts to babble, and then it melts to a pile of goo.
They appear as cadaverous humanoid creatures that attack at close range with their claws and from a distance by vomiting projectiles of green goo.
Odo then takes the goo into his hands and begs the little creature not to die.
In this situation (called the grey goo scenario) out-of-control self-replicating nanorobots consume entire ecosystems, resulting in global ecophagy.