Perfect for fire drills / exercises smoke

We put this fluid under fire drills regularly. Several trials with unterschliedlichen fluid from various manufacturers have to grab me convinced repeatedly about this product. With this fluid I could produce the densest fog.
However, it must be noted that in the area directly in front (2m) of the fog machine (if this example is on the ground) a greasy film is produced (will probably not be possible otherwise in extreme fog fluid). Therefore, there is a star deduction. Otherwise strong buy recommendation.