During your regular visits to your Waterloo dentist, you may have seen them use a pre-rinse before they undertake any procedure. You may have wondered, “Why does my Waterloo Smiles use a pre-rinse yet they also disinfect all surfaces?” Well, you are not alone. We know that throat secretions, nose secretions and blood can become aerosolized during procedures, linger in the air and eventually settle on surfaces and from one person to the next. These aerosols can contain bacteria, fungi, and viruses. With the COVID-19 pandemic, it makes sense that we should try to eliminate or at least lower the volume of aerosols in the procedure room of your Waterloo dentist.