Job Description. FULL & PART TIME JANITORIAL CLEANER (Janitorial) Channahon, IL, United States of America AddThis Sharing Buttons Overview. Tier One Property Services, L.L.C (TOPS) is a minority-owned facility services provider of commercial janitorial, building maintenance and specialty property services, our customers can expect high standards of quality, professional process, and proficient motivated workforce for TOPS. Job Skills / Requiremen...