About TNT Commercial Services 615 TNT Commercial Services 615 provides professional, reliable cleaning and maintenance solutions for businesses in Nashville, TN. Our services include: Pressure & Power Washing – Thorough exterior cleaning for buildings, sidewalks, and parking areas. Janitorial Services – Daily or scheduled cleaning, sanitation, and floor care. Garage Maintenance – Sweeping, pressure washing, degreasing, and high dusting for garages. Landscaping Services – Lawn care, trimming, mulching, and seasonal maintenance. Industrial & Commercial Window Cleaning – Interior and exterior glass cleaning. Facility High Dusting – Dust removal from vents, beams, and other hard-to-reach areas.