An apparatus for disinfecting products is disclosed herein. The apparatus comprises a tank for holding a liquid for receiving microorganisms from the products. The tank comprises a barrier separating the tank to provide two regions of liquid, the two regions of liquid comprising a first region and a second region, wherein the first region is arranged to provide an open channel for the liquid through the tank to enable a product to be carried into, along, and out of a flowpath through the channel and the second region holds liquid adjacent to at least one ultrasonic transducer for providing ultrasonic energy to the product via the liquid in the second region and through the barrier.