You'll probably be better of with a different one....your current antivirus may cover spyware/adware (at least if it is CIS), and it doesn't make a difference if it is in temp folder.
I don't even use an antivirus/spyware/adware program. D+, the firewall, and my backups are good enough for me. If you want a cleaner, get CCleaner or Comodo System Cleaner.
You don't need two or more, usually.