One of the two conditions needed for משקה הבא לאוכל (squeezing liquids onto solids).
how to Apply the Melacha of 'מכה בפטיש' (Final Action);
Using nice smelling liquid soap, placing lavender flower bars and other essence of deodorizers into drawers or closets, and putting unscented powder into shoes...
Introduction to the Melacha;