Any use of hazardous materials inside buildings must be controlled to ensure that the exposures are below 
permissible exposure limits (PELs). 

Except in specially vented areas (e.g. laboratories hoods), products containing (or emitting) volatile  compounds or toxic fumes are restricted to 

1 - Use in an unoccupied building or in an occupied building with additional ventilation, and

2 - Use by trained employees using respiratory or other appropriate protection.

Hazards must be determined in advance and potentially exposed employees trained on the specific hazards. 

Employees using respirators must have annual medical review, training and fit testing. 

For product review, training, air monitoring or consultation, contact Environmental Health and Safety at 646-3327