The term 'USE A SPONGE' can be broken down into three crossword solutions: SOP (3 letters), WIPE (4 letters), and WIPEUP (6 letters). SOP stands for Standard Operating Procedure, which is a set of instructions that outlines how to perform a task. WIPE is an action verb meaning to clean or remove something with a cloth or other material. WIPEUP is an action verb meaning to clean up a mess or spill using a cloth or sponge. Therefore, the term 'USE A SPONGE' can be interpreted as a suggestion to use a sponge to clean up a mess or spill according to a standard operating procedure.