To save labor and improve protection coverage.
Most topical applications are only as effective as the operator.
The biggest reason is to fill a void in the market that present day topicals, because of drying time, cannot address. Because of constant traffic, hotels and hospitals can not wet out their hallways or guest rooms to allow time for the conventional topicals to dry. This is also true in many office situations, especially for the building service companies. These tend to dry quickly. However, there are a few areas of concern such as odor, health and environment.