Living in Fear in Green Block

Came back hall early this morning to get some work done, but i keep hearing irritating squeeking noises, which i was hoping are made by the birds and not by lizards..

then somebody was hovering at my door and i open to see a leaflet from hall office

i quote
"We suspect that there is a rat/mouse running loose at level 4. As for hygiene purposes......"

what the ****

now every noise i hear makes me scared, and i can no longer sleep in blissful peace.

THANKS man.