Fields of reeds and crops in Korea's southern Jeollanam-do Province have been stripped by swarms of bugs.
But thankfully, the worst is thought to be over now.
Officials say pest control successfully eradicated the infestations over the weekend.
"It took two days to find an environmentally-friendly chemical and that's why the locusts destroyed eight to nine hectares of my land in a week."
The swarms damaged roughly 100-thousand cubic meters of agricultural land, nibbling on every edible leaf and making harvest time hard for farmers ahead of the Chuseok holiday, otherwise known as the Korean Thanksgiving.
The insects, which range in size from 50 millimeters to 4 centimeters long, were identified as migratory locusts, which can grow up to 6.5 centimeters.
"They don't seem to be Chinese grasshoppers. They are migratory locusts that also live in Korea. Usually they are green, but as they changed into group types, they became black."
Experts believe their sudden appearance was due to underground eggs hatching after recent rain.
Until the ecosystem stabilizes, scientists warn there is a good chance that the locusts may reappear, and they've called for observation and countermeasures to address the problem.
Kwon Soa, Arirang News.