The P is Psilent

Cats like to pee in silence. You are a cat in the purr-suit of a silent house so you can use the litter box to P. 

Use WASD to move around, and mouse to look up or down.

Press (E) for consuming food and water. Be careful when the bar is red

There are three powerups that you can try in the tutorial room.

Press (Q) to meow.

Click to open closets.

Meow as many times as there are bars near a human to stop their devices, increasing silence. 

After all the devices are silent go to litterbox and P.