We release a number of different cat species and use special plants to help fend off hordes of rodents. All grain stores are now locked away in sealed iron vaults to prevent rodents, birds, and other beasts out. We also use ice and snow, along with salt, to help preserve meats, while ice and snow are simply used to preserve breads and greens. Basically we create a primitive refrigerator.
Birds and rats and other animals are hunted while other plants are being planted around crop fields to fend off bugs. Pits are also made in around them and fire is set off in these pits to kill and annoy bugs. (They hate smoke IRL).
Food is locked in vaults. Anyone coming into Muscovite territory is immediately shot and left to die. Muscovy stops trade completely. Time to breed them Rhunic horses. >
*sends in player character who is general of the entire nation of Qarir, gets shot in the head even though he was trying to bring in a document for an alliance*