The threat was, for the moment, handled and the Elf made a good point.  Though these rats had not really presented all that much of a challenge two of them had been slightly wounded, and who could say how many more of the beasts were even now hiding in their burrows, the forests, or as Tracan had said the house itself.  

"If there are tunnels," Gorosk said as he wiped the blood from his leg to see how bad the damage truly was, "there could be a horde of those things moving about through these hills.  Enough to make it all but impossible to kill them all, likely actually impossible to know when we had killed them all, and equally impossible to stop new rats from moving in."

"Tracan, Vah'lux," Gorosk asked the two members of the party who seemed the most likely to be well versed in the natural world, "any idea why these things might be so focused on this plot of land?  Perhaps we should be looking for something, but what?"