MSDS for the jobsite are located either under or behind the seat of all company trucks. Now if the question is asked, Snake is much more likely to remember something written in a very specific manner. Vague wording is easily forgotten. Likewise, if I told you that getting a job as a painter depended on your signing my article, you would likely read what I had to say a lot more carefully. Employees are no different.
Most people take the time to read what they sign.
Update your paint. Many painting contractors obtain MSDS books from their suppliers. These books are then usually put together in a binder and kept in each truck. This creates a tendency to put MSDS on cruise control. Every office should contain an exact duplicate of this binder on each work truck.