I used to have a lot of problems with angular chelitis, and I scoured the internet, and found out about the Palmolive soap solution. Problem was that I couldn't use Palmolive, as I live in a part of the world they don't sell that brand, so I used another brand, and the results weren't anything to mention about.
Then, I thought about it, and realised that there is something else very good at killing bacteria and viruses, that many use everyday; that being the hand sanitizers that contain alcohol. The alcohol kills the bugs. 'Medical' and 'Rubbing alcohol' also work, as long as you seal the disinfected area around your mouth with petroleum jelly. It's worked for me. I did this once before going to bed for about four nights, and it's only been a week but I've had no problems since.
Hope this helps anyone. Chris.