If not is should be against the law not to be responsible with  providing preventive training, but let's be honest the last thing a business owner wants are a headache from their staff coming in contact with anything hazardous. 

Being in the cleaning business heightens the potential exposure to viruses but using the proper PPE and pre cautions can also heighten a safe work environment.

You want to be able to provide blood borne pathogen training that's interpretable and that educates, and promotes responsibility, and caution whether they are the injured or have to report an injury. At the end of the day, you want to be successful cleaning business owner that provides a service that's not only detailed but injury free.