It appears the battle with the palm rat is over. Read how it all started by reading the previous two posts called "I heard a noise coming from the toilet."
Here's the new up-date.
Day 6 - Yep, the palm rat (HoudiniRat) has eaten one too many XXX rat poison pellets. The only problem, the body hasn't been found, however it appears the battle with the palm rat is over and the clean up begins.