Mustan 1
Rat 0

Notes:
The two pictures on the top represent the overview - he kinda runs in from where my stationary is into his hideout behind the shelves (see picture 2).

Since I was ticked off, I used the Sunday Times to seal the entry and also the path into the hideout - he is there right now. Very quiet - and unable to get out. The dude will probably eat on the paper - he eats the wall and drops the debris for me to clean - this should be a welcome change in diet.