Click&Clean is yet another Firefox extension that requires you to download another program--CCleaner--first. The good news is that both this extension and CCleaner are free and worked perfectly for us.
CCleaner is a program that rids your computers of unwanted files, including temporary files, cookies, and browsing history. Click&Clean is basically an extension that allows you to access CCleaner directly from your Firefox toolbar. It adds only a single button, so it won't clutter your browser window. Clicking it opened the CCleaner interface immediately.
If you're a Firefox user, and a fan of CCleaner, we highly recommend this free extension for easy access.