When he isn't busy fighting violent criminals, Spider-Man evidently tackles a different force of evil: dirty windows.

According to NBC News, window washers at Le Bonheur Children's Hospital in Memphis, Tenn., recently donned Spider-Man outfits in a quest to bring smiles to the patients inside.

The stunt seems to have had the intended effect. "SO AWESOME to see them dressed up and making the kids and many adults smile! Thanks from those who work at LB, we loved this!" Sara Warhurst, an employee at the hospital, wrote on Facebook.

"My 17 month old daughter was waiting to be discharged when she saw spiderman...she was excited! Captain America was also there and he came to visit her. Thanks!!" added Catherine Davis.

The three employees involved, Jordan Emerson, Steve Oszaniec, and Danny Oszaniec, all work for American National Skyline, a commercial window cleaning business.

This is not the first time superheroes have put in overtime at a children's hospital. Spider-Man washes windows worldwide on a somewhat regular basis, and last spring, Batman gained some notoriety for zipping into Maryland area hospitals in a jet-black Lamborghini.

PHOTOS of Spider-Man washing windows:

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  • Window washers with American National Skyline, Jordan Emerson, left, Steve Oszaniec, center, and Danny Oszaniec don superhero costumes before rappelling down the outside of Le Bonheur Children's Hospital in Memphis, Tenn., Wednesday October 17, 2012, to surprise patients and their families inside. (AP Photo/The Commercial Appeal, Brandon Dill)

  • Dressed as Spiderman, a window washer with American National Skyline greets Le Bonheur Children's Hospital patient Orlando Farmer, 3, as he rappels down the outside of the building, in Memphis, Tenn., Wednesday October 17, 2012, while cleaning the hospital's windows. (AP Photo/The Commercial Appeal, Brandon Dill)

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