(3BL Media / theCSRfeed) June 15, 2011 - The field of employment that applies to custodial maintenance, janitorial services, or environmental health services has long been without a certified training program. Now that GREEN has come along and focused our attention on the health impact of cleaning, more and more conversation depends upon applying Green practices. This will cause more companies to ask the question, “what are the best Green practices, and how can they be applied to custodial services?”