An antique shop owner repairs Snow White lawn ornaments by scrubbings them with a steel brush, filling chips with concrete, and painting them.

That's calcium carbonate, present in the raw materials used to make concrete statues, rising to the surface in a process called efflorescence. Rain will eventually wash it away.

How to clean concrete statues like a pro Before you can begin to clean and refresh your yard art ideas for the new season, it's best to gather all your cleaning supplies first. You will need: ...