This hand sprayer is used to perform the floor drain treatment program. A pack of FlyAway is poured into the 1.5 gallon sprayer and 1-gallon of warm tap water is added 1 to 3 days before use, then used to spray all of the floor drains, the beverage tower drain, under equipment and other hard to clean areas. One gallon of dosing material will treat 10-15 floor drains.