While inspecting buildings in preparing quotes for potential customers, I get a look at a whole lot of janitor closets used by my competitors (I'm in janitorial service in Phoenix AZ). I could count on the fingers of one hand the MSDS books I've seen in those closets, including janitor closets used to store lots of chemicals. On the other hand, I do see a lot of unlabeled squirt bottles...
Given that the undocumented chemicals are in the customer's building, and therefore in his employee's workspace, it would be the customer having to deal with OSHA, and with the fines. Interesting, how many janitorial firms set their customers up for a fall, and how many customers are blissfully unaware. And it's so easy to be safe and legal with one's janitorial supplies.
A bit about us:
My firm, CBN Building Maintenance, provides commercial cleaning services in Phoenix AZ and the wider metro area. We've been in business since 1974; hold the BBB's A-plus rating; and have long been in the forefront of the industry in environmentally sensitive cleaning for health, safety and security. Our program can generally improve Indoor Air Quality, in the size range of most allergens, by a factor of 50%, as reflected in our ongoing IAQ sampling.