FOG Puck Small Drain Treatment Neem, 8 oz, 400/CartonDrain Treatment Neem is formulated to treat the drain lines and drain tray of beverage dispensing machines. Its formula provides a continuous dose of beneficial bacteria and effective ingredients into the tray and drain to help prevent build up. It helps prevent formation of sugar snakes. Preventing blockages in traps and pipes keeps your dispenser clean and fresh. Dosing frequency is dependent on beverage machine use and will vary from site to site