All washing machines of any model (top load or front load) will have the mould problem. However, it is more persistently seen in front load models because of the airtight doors with a gasket seal. Other areas of the washer are prone to mildew other than the gasket, like the detergent dispensers, the top area of the drum, inside the drum, and the door of the machine. Of them all, the rubber seal is highly susceptible to mould growth as it traps moisture.