消杀

消杀	xiāo shā	to sterilize; to disinfect / to kill; to exterminate (insects, pathogens etc)
消	xiāo	to diminish; to subside / to consume; to reduce / to idle away (the time) / (after 不 or 只 or 何 etc) to need; to require; to take
杀	shā	to kill; to slay; to murder; to attack / to weaken; to reduce / (dialect) to smart / (used after a verb) extremely