Many facilities experience odors emanating from floor drains in restrooms warehouses public areas and confined spaces. These are mostly due to the trap seal in the trap evaporating over time the trap seal not being replenished through trap primers or no additional water entering the trap i.e. through wet mopping a floor. In addition depending on the climate you live in trap seals may evaporate rather quickly. If the trap is configured with a trap primer it may be that the trap primer no longer works. In case the trap was never outfitted with a primer continuous replenishment of water to the trap is necessary to control odors costing man hours and salaries. Enter EverPrime! Simply add about 1 gallon of water to the smelly floor drain and add approximately three (3) ounces of EverPrime into the floor drain (on top of the water). Done! As long as there is no additional large amount of water entering the floor drain EverPrime will last. Floordrains 1-1/2 to 2 add 3 oz. of EverPrime. Floordrains 3 to 4 add 6 oz. of EverPrime.