What we offer. Count on ServiceMaster Clean® to enhance your image and provide a healthy, well-kept working environment. For over 50 years, we have developed the most effective methods and products to service all types of buildings including offices, research facilities, hotels,retail stores, hospitals, public entertainment venues, schools and even the airline industry. In fact, over 100,000 organizations trust ServiceMaster Clean to keep their facilities looking great every day. Whatever your service or scheduling needs, we can tailor a janitorial service plan just for you.