In this Thursday, Nov. 21, 2013 photo, Barbara Kansky, condo manager of Devon Wood in Braintree, Mass., uses a long cotton swab to demonstrate how to obtain a DNA cheek cell sample from her dog, Justine. Apartment and condo managers, dogged by complaints from those who’ve have experienced the squishy and smelly sensation of stepping onto a pile of dog doo, are turning to DNA testing to identity the culprits who don’t clean up after their pets. (AP Photo/Elise Amendola)

Photo by: Elise Amendola

In this Thursday, Nov. 21, 2013 photo, Barbara Kansky, condo manager of Devon Wood in Braintree, Mass., uses a long cotton swab to demonstrate how to obtain a DNA cheek cell sample from her dog, Justine. Apartment and condo managers, dogged by complaints from those who’ve have experienced the squishy and smelly sensation of stepping onto a pile of dog doo, are turning to DNA testing to identity the culprits who don’t clean up after their pets. (AP Photo/Elise Amendola)