Since March 19, 2021, Australia has been flooding with mice.

It all started in September of 2020 when the rain led to the growth of the crops. A local Australian farmer, Colin Tinks, grew enough wheat for two years worth of cattle. Then the mice came. Not hundreds, but thousands.

Unfortnelty for Colin, the rats went after the wheat. Even the salvageable parts aren’t usable because the mice’s pee on the crops is disgusting and trickles down onto the rest of the wheat. The first night, Tink and his family caught 7,000 mice.

“It breaks your heart a bit…we’re back to square one,” Tink told the Washington Post.

While the invasion is alarming, it’s expected. Australia suffers from a mice plague that happens every 10 years or so.

Even old Australian farmers remain traumatized from the 1970s mice plague in which the ground felt like it was moving because of how thick the mice were.

With a shortage of traps, farmers have to be creative and come up with their own trap systems to catch mice — making traps out buckets and barrels along with traits to try to trap them so they never come back.