What is the best way to get my tray's &/or containers clean?

Bottle of pH down.Put on gloves then, take liquid ph down in a spray bottle & spray the containers/tray’s & let sit for a couple minutes. After a couple minutes wipe off the containers/tray’s with a towel. If need be reapply & wipe down again. Customers love ph down as a cleaning agent but it is acid so you need to wear gloves and BE CAREFUL not to get any on you.