Got a riding buddy at Dubbo who uses a modified drain cleaning vacuum to clear them out of his winter feed silos
I think he said it is 5,000 gallons and he fills it between 2 & 5 times a night .
All of the feed that was not eaten is contaminated beyond use .
And yes, 2 to 6 pups event 14 days that are ready to reproduce in 21 .
City folks just don't understand how fast the numbers can multiply.
They have already eaten almost the entire winter crops and will probably eat the entire coming summer one as well before they get on top of them.