Conservationists refer these New Guinea flatworms as 'one of the world's worsts invasive species'.
These worms doesn't even need a mate to reproduce. A single worm can turn into dozens.
An agriculture agent, Roy Beckford warned the dangers of coming into contact with the worms. He says that if ever see a flatworm, do not touch it.
"It can actually cause problems on your skin because it actually vomits up this caustic substance that can cause problems" he said.
The worms carry a parasite called rat lungworm. Even if you live in a rat free area these slippery slugs can be also a hazard. These can be passed onto human beings that can result to meningitis, swelling of the brain and spinal cord.
Researchers say the best way to kill the deadly worms is to pour boiling water over them.