Tuesday's Ask the Experts: Removing gum stains

November 17, 2009

Tuesday''s Ask the Experts question from a cleaning professional on the International Custodial Advisors Network (ICAN) "Ask the Experts" page: What is the most effective way to remove old gum from concrete stairs and sidewalks?

The answer:

Use a pressure washer with a narrow fan spray tip. The hot water from a 1,200 to 1,500 pounds of pressure per square inch (PSI) truckmount pump works well.

Get the right angle, and the hot spray will quickly peel the gum off the walkway. — Lynn E. Krafft, ICAN/ATEX editor, lekrafft@juno.com.

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