I remember when a thief came into my house through an unlocked windowwhen I was a graduate student in Miami and stole my underwater photography gear. The police almost laughed at me when I suggested that they dust for fingerprints the window that s/he obviously opened*. They told me it wasn't like a cop drama TV show (copaganda really is copaganda) and they wouldn't do it. But when a healthcare CEO is gunned down in Manhattan, they will pick up candy wrappers and water bottles off the street to try to find DNA (much more expensive then fingerprints, and prone to errors if they are using objects on the ground in a crowded city). My claim was denied, but the healthcare CEO's claim will never be denied.
*I'm not trying to equate theft to murder. I'm trying to compare the responses. The cop's response suggested that they rarely dust for fingerprints. Ever. His solution? Monitor Ebay for your photography equipment and let them know if I find it!