The Science of Professional Cleaning : Handbook for ... (ISBN 0967830338)

The best I've found!:
Forrest Farmer's Handbook for Janitorial Services, "The Science of Professional Cleaning" is a superb resource. As the supervisor of the Campus Environment Team at a small college in the Midwest, I was looking for a reliable resource to use for the training of the campus cleaning crew. I had checked several that had been recommended but none fit what was needed. When I came across Forrest Farmer's book, I was thrilled. It is exhaustive in its content and yet concise and simple in its presentation. It has met our training needs beyond my expectations.

the janus elites:
a grimoire of the janitor.A manual of the cleaner.Only useful for the getting down to brass tacks individual,focused,self-reliance.The work of janitor is long old and respected.Janus,roman deity of entrances and exits,the keymaster.Indeed this grimoire,will be stored in the lodges janitors closet!