You can clean regularly and still find stains, grease streaks, and mildew around your home. A few non-toxic ingredients and a little elbow grease will do the job for you.
Sprinkle a little baking soda on the surfaces, then scrub them with a moist cloth. For stubborn grime, add some kosher salt to the mix.
A few minutes soaking in some vinegar or lemon juice before a good brushing works great for these surfaces, too.