See either you can use Revo Uninstaller, or even CCleaner. Both of these will help you get rid of the Dr. Cleaner.
Dr. Cleaner has been stated to be a booter, along with regegitor, which means it changes the registry data & makes a lot of uninvited changes which leads to the system getiing stuck, or even crashing at times.
You will find the CCleaner & Revo UnInstaller here:
The latest version of CCleaner