Best Practices for Workplace Cleanliness

Some people like to insist they work best in a messy workspace, giving them an excuse to have a cluttered desk or a cluttered home office. But realistically, almost all of us work better in a clean environment. If your workplace is cluttered, unhygienic, or otherwise perceived as unclean, you’re not going to be able to focus on doing your best work.
So what are the best practices for workplace cleanliness? Which strategies and tactics should employers use to keep workplaces clean and productive?