Almost Elvis. There are still one or two idiots form the 'old and bold' section of the peloton who were caught doping during the Giro but the sport IS getting there with the stance of Team Sky, who have a no drugs whatsoever policy, to the point that even back room staff who doped in the Lance Armstrong era left the team set-up.
It's gotta start somewhere and the Sky team are leading the way.
To digress a little, it used to be prevalent at the Vuelta, but that was because the Spanish had a more relaxed attitude to doping.
The French are totally the opposite, they hate their worldwide event being besmirched by drugs and EPO and come down heavily on offenders, as David Millar would testify:
http://en.wikipedia.org/wiki/David_Millar#2004:_Doping
He goes into far greater detail in his book. Ironically, he is now one of the biggest voices against doping and has bent over backwards to help clean up the sport, to his credit.