[Mastador1]

Actually if you read they say he tried to flush it, I don’t know why he didn’t stick around longer with the dead chick to finish the job.

[rollo tomasi]

DNA evidence was the probably the last thing on his mind since there was plenty of it besides the condom/cigarette. After intercourse/a sloppy murder, all kinds of DNA evidence is left. DNA left in her fingernails/ his hair/his saliva/fingerprints etc...