Ihave a chicken coop/pen made of wood 10'x13'. what do we use to disinfect coop, very messy have 1 dayold chic

i have a chicken coop/pen made of wood 10'x13'. the coop had previously had chickens in it,but are now gone. I have got new 1 day old chicks (bantams).What would i use to disinfect the coop from mold and poop?i used a pressure washer, but should i use a chemical or something like bleach?