Refrigerator door gaskets are prime breeding grounds for mildew and mould, but only under the right circumstances. While the sealed folds of the gasket are normally pretty well protected from mould spores floating in the air, the likelihood of contamination increases if you fail to clean your refrigerator regularly. In addition, the gasket is not exposed to moisture very often. But if you spill a bit of water on the gasket, it will fester in the cool, dark atmosphere of the gasket folds and give mould spores life. Fortunately, a safe solution exists to remove mildew from refrigerator door gaskets.
Remove all food-related items from the shelves on the refrigerator door.
Pour 3 per cent hydrogen peroxide directly on the door gasket. Hold open the folds in the gasket to reach all the nooks and crannies in the gasket. Submerge the mildew completely.
Allow the hydrogen peroxide to sit on the mildew for one to two minutes. Catch any dripping peroxide with a rag dampened in warm water.
Scrub the gasket with a nylon brush. Hold back the folds once more to reach the inner surfaces of the gasket. Continue until all the mildew is removed.
Rinse the gasket using the clean cloth dampened in warm water. Dry the gasket with a second clean cloth.