I think ccleaner is very good program

Espcielly secure deleting makes me safe.

But I want to support auto-cleaning in near future.

Use Windows Task Scheduler to do it. Just input the parameters:
"C:\Program Files\CCleaner\ccleaner.exe" /AUTO

While using Task Scheduler works, I do see djk2000's point. It would be nice if you could set when you want CCleaner to run from right within the program, like his screenshot showed. That way, you would only have to be familiar with the simple to learn CCleaner interface, and you wouldn't have to mess with setting up tasks and cprompt-like commands.