MGS Supply & Services

MGS Supply & Services is a janitorial contractor that cleans commercial, medical and industrial facilities across greater Houston. Its recurring cleaning programs cover offices, retail spaces, restaurants, gyms, car dealerships, surgical suites and laboratories, with ATP bioluminescence testing used to check surfaces for microbial cleanliness.

Each site gets an assigned crew that works the same building every visit, and the company reports QA inspection scores back to clients through an online portal. Crews are background-checked, bonded and insured, and the company runs a phone line around the clock for spill, flood and biohazard emergencies. Office hours are weekdays, and the business is based in Katy, Texas, with service across greater Houston.