[header] How to clean a concrete patio [title] Remove all furniture and other objects. [step] Before getting started, you'll want to make sure your patio is completely clear. Find a place away from your work area to stash patio furniture, dining sets, planters, grills, toys and anything else that may be damaged by free-flowing water or cleaning solutions. 
Your work area should ideally be as empty as you can get it. [substeps] Bring lightweight furniture inside, and move heavier pieces to the yard, sidewalk or a covered porch.