Run the washing machine on the hottest cycle it can do pausing the machine at the beginning of the cycle and letting.
Best thing to clean washing machine drawer.
Simply add a cup of epsom salts to half a cup of vinegar or even just water and add directly to the drum.
How to clean a mouldy washing machine drawer the simplest way to clean the drawer is to use hot soapy water a cloth and an old toothbrush for getting into those.
Add a quart of bleach for stain removal.
If the inside of your washer is stained bleach will do the trick.
Make sure you clean the bottom of the drawer even if you cannot get the drawer out of the machine as you most.
Wipe drawers with a damp cloth after each use to stop detergent build up and every couple of months pull out the entire drawer and clean it thoroughly in hot soapy water and leave it to air dry.
Try to avoid using cold water wash cycles.
The warmer wash cycles will help deter the mold growth in the drawer.
Once you have removed the drawer you can clean it easily using hot water and a small brush if your water has a lot of calcium in your area you may wish to bleach the areas that have scum marks on them will also need bleaching.
To keep the area dry leave the detergent drawer open when the washing machine is not in use.
Add it through the dispenser so that it mixes with hot water then let the machine finish the rest of the washing cycle.