Australian farmers face £100m mouse crisis as crops vanish overnight
A plague of millions of mice is devastating Australia’s grain belt, wiping out entire harvests and forcing farmers to sleep with firearms for protection. Grain Australia reports losses exceeding £100 million already this season, with no sign of abatement in the coming months.
The mouse plague tearing through Australia’s grain belt has reached biblical proportions, with farmers in New South Wales, Victoria, and Queensland describing scenes of overnight devastation. In the past week alone, one farm in the Riverina region lost 30 tonnes of wheat—enough to fill 1,200 standard grain sacks—after a single night of rodent activity. “It’s like watching a slow-motion fire,” said 58-year-old farmer Greg Thompson, standing in a field where knee-high wheat stalks were reduced to brittle stalks within hours. “They don’t just eat; they shred, contaminate, and breed in the wreckage.”
Emergency measures are failing. The New South Wales Farmers’ Association has declared the infestation a “biosecurity catastrophe,” after receiving over 2,000 distress calls from landholders in the past month. State governments have deployed £8 million in bait and traps, but farmers say the rodents outpace every countermeasure. “We’re using enough poison to kill an elephant,” said Thompson, who now mixes grain with zinc phosphide daily. “Yet the mice are immune—or maybe just hungrier.”
| Region | Infestation Level | Crops Affected |
|---|---|---|
| Riverina, NSW | Critical | Wheat, barley |
| Wimmera, VIC | Severe | Canola, oats |
| Darling Downs, QLD | Severe | Sorghum, wheat |
Scientists at the CSIRO warn the outbreak stems from two years of record rainfall followed by a bumper grain harvest, creating a mouse population explosion. “We’re seeing 10 mice per square metre in some fields,” said Dr. Lisa Carter, a rodent ecologist. “That’s 100,000 mice per hectare—enough to devour 50 tonnes of grain in a week.” The CSIRO has issued a stark forecast: unless rain stops and temperatures rise sharply within six weeks, the plague will intensify before harvest season in November.
📋 By The Numbers
- 2.1 billion — Estimated mouse population in Australia’s grain belt
- 50% — Average yield loss reported by farmers in worst-hit areas
- 1,800 — Number of emergency calls logged by NSW Farmers’ Association in May alone
Farmers are taking drastic steps. Some have resorted to sleeping in grain sheds with loaded shotguns, while others hire helicopter pilots to drop poison from the air at dawn. In Victoria’s Wimmera, a local council has banned outdoor gatherings after a child was bitten while playing near a bait station. “We’re not just fighting mice,” said Thompson. “We’re fighting a war with no front lines—and the enemy keeps multiplying.”
💡 Pro Tip
Farmers should rotate bait types every two weeks to prevent resistance. Mice develop immunity quickly—using the same poison repeatedly is like feeding them.
Federal Agriculture Minister Mark Coulton confirmed the federal government is considering a £50 million relief package, but stressed it may arrive too late for many. “We’re dealing with an unprecedented biological event,” he said. “The scale is beyond anything we’ve seen in decades.” Meanwhile, grain traders in Melbourne have raised domestic wheat prices by 12% this week, citing “unforeseen supply shocks.”
- Emergency funding — Federal government considering £50m relief, but likely after critical harvest period
- Biological controls — CSIRO testing pheromone-based deterrents to disrupt mouse breeding cycles
- Community response — Farmers forming armed patrols and sharing real-time sighting alerts via closed radio networks
As autumn deepens, the mice are burrowing deeper, preparing for winter—and farmers fear what spring will bring. “This isn’t just a plague,” said Thompson. “It’s an invasion. And we’re losing.”