This is sorta the problem. I mean, like it is obnoxious. Beside that there is only ONE rat CAVE. There are parts of the cave system that have some rats but not alot. Like they produce less than the RAT CAVE (Mod Town). It would be nice to add more rooms to this cave with more of a rat spawn rate or a new cave somewhere else.

Another Idea is making a new hour place but like 5000 or 10000 hours and making it into a cave type thing. But make it like a house cave where there are pools and like grass and house type/outdoors type things as well as having caves for baddies.
Since the Grotto has a farm area, take out the farm area out of this place and replace it with cave systems of different baddies.