Is there a test or other method to prove the Sani Shield Barrier is working and still on the surface?
Yes, there are a number of Surface Swab Test devices available such as a Luminometer which are widely used in the Health Care, Food and other industries. These devices test for ATP Soil Protein which is produced and found in all living cells and are a general gauge of the soil load on a surface. If one of those devices is not available, a simple way to test for the presence of the Barrier is to spray the surface with water to see if the water bubbles or beads up on the surface. If the surface is water, soil and stain repellant then the barrier is intact and working to protect the surface.
