"Master, how long will you keep spending your time wishing for your body? Veez is bored and wants to see blood, and guts and have fun causing trouble for the humans." The imp Veez says complaining while laying flat on Xalroz's head as he was sitting down on a stool with a blanket filled with water in front of him.
At the moment, Xalroz was still inside Gus's travel using the room where customers mad enough to stay over the night can have their time to up one's flesh of the body.
He certainly needed it after the killings his own hands had done that day in Gus's tavern. Removing the blood from the body needs to be done with the rag in hand already stained by some of the blood taken off.