Destructive mice have cost a Dubbo business "thousands of dollars" as they've chewed through its products this year.
Dubbo Pet and Stockfeeds has battled the rodents zeroing in on its haystacks, grain, dog biscuits and even equipment for months.
Office manager Alison Carey said it had been a big process keeping the mice out of everything because they could not be allowed to contaminate the feed the business manufactured.
While there had been fewer mice lately, she was concerned the numbers would rebound.
"Apparently they go on a three-week cycle, because that's how long it takes them to have babies," she said.
Ms Carey has worked in the business for eight years and said she's never seen anything there like this year's plague, with only minimal mice normally.
But just as the critters have overrun large parts of the region, ruining some summer crops and stored hay, invading silos, sheds, homes and businesses and even biting three patients and residents of health facilities, they also found the Jannali Road business.
It has haystacks for cutting chaff and grain for making scratch mixes.
"It's just like an all-day buffet here at the moment," Ms Carey said.
The mice only had to "nibble a hole" in a $50 bag of dog food and it was "useless", she said.
"Thousands of dollars" of stock had been lost, she said.
The rodents had also been getting into the store's machinery and eating the plastic air hoses, Ms Carey said.
"You'd think they'd have enough feed to eat, but I don't know what it is, that lures them... it must be to sharpen their teeth or something, I don't know, but they're in there," she said.
"And I can't believe they ate that, when they've got all the other food on hand."
The problem called for ingenuity.
"We have to be very safe here obviously, because we make our own feeds," Ms Carey said.
"So we actually did a little competition among ourselves as to who could make the best trap.
"So on Facebook you've seen some pretty cool traps, so we've got our own homemade, the peanut butter on the roller, and the trapdoor one, we've got all sorts of different things around, and it's a competition to see who catches the most mice each day."
One morning there were 70 caught in one bucket, Ms Carey said.
"That's nothing compared with the people out west, but it's pretty huge here," she said.
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