Every container delivered to your facility has its own pump, installed permanently in the drum or pail (Pump-In-A-Pail®). The containers are sealed and never need to be opened. You can send back the empty containers through our Return For Refill® program, which will save you money and help the environment. Pump-In-A-Drum® (PIAD) is proven technology, in use by Riverdale for more than 10 years.