You can use bleach but very little. Use a couple caps full of bleach, just enough to kill the smell along with your detergent.
If the washing machine smells anyway, I would look into why water would be staying in the machine. I have left clothes in a machine for a couple days and have not had this type of problem. Sounds like you may have other problems that need to be fixed.
If the washing machine smells anyway, I would look into why water would be staying in the machine. I have left clothes in a machine for a couple days and have not had this type of problem. Sounds like you may have other problems that need to be fixed.