You can make Cache Cleaner clean your cache without even having to log into the administrator.

By defining a secret word in the system plugin settings, you can then simply use it in any frontend URL of your website, enabling you to clean the cache directly from the frontend.

For example, let's say your secret word is set to: mysecret.

You can then simply place your secret word after a cleancache= parameter in url, like:

http://www.yourdomain.com?cleancache=mysecret
http://www.yourdomain.com/some-page?cleancache=mysecret
http://www.yourdomain.com/index.php?option=com_content&...&cleancache=mysecret

This will trigger the Cache cleaning process, and will show you a success message after the cache is cleared.

Note: as a prefix before cleancache, use a ? for SEF urls, or & for urls that already have variables.