This complete DVD set includes chemical safety, basic and advanced floor care. The Chemical Safety training video is an excellent complement to the chemistry of cleaning module of the CMI Basic Custodial Technician Handbook but, is also beneficial as a stand-alone training video on chemical safety and the chemistry of cleaning. The Basic and Advanced Floor care DVDs combine a thorough overview of routine daily and long-term project floor care tasks with humor and lots of demonstrations. These two floor care DVD’s will walk hand in hand with both floor care sections of the CMI Custodial Technician Training handbooks. Each DVD will run approximately 30-45 minutes in length.