We offer a variety of office maintenance plans including vacuuming, dusting, restroom cleaning and sanitizing, and cafeteria cleaning. BlackHawk Janitorial Services LLC will find it. Guaranteed. Our attention to detail makes us stand out in the commercial cleaning business. We clean behind and underneath all the hard to reach spots. BlackHawk Janitorial Services LLC will leave your office space professionally cleaned and sanitized. We also offer floor stripping & waxing and post-construction clean up for office expansion projects.