To clean the inside of a washing machine, fill the drum of the machine with hot water and add one of several cleaning solutions, including bleach, baking soda and vinegar. After the drum of water and solution has soaked, allow the cycle to run and the water to drain.
It is advisable to clean a washing machine on a regular, even monthly, basis. Solutions for cleaning a washing machine include bleach and hot water, vinegar with baking soda and hot water and pre-made washing machine cleaning solutions. In between cleanings, leave the lid or door of the machine open to allow air to circulate and extra water to dry out. It is also important to promptly remove loads of clothes that have finished washing to prevent musty and moldy smells.
Newer washing machine models may come with an automatic cleaning cycle to be used with a pre-made cleaning solution. It is important to clean the exterior of the machine as well to keep it stain and substance free. If the household has pets, it may become necessary to remove pet hair from the washer. To remove hair, allow the washer to dry out with the door or lid ajar and then use a vacuum to remove the hair from the drum.