A 15 minute wash may be enough for some jobs, but it is not recommended as a general rule. If you have heavily soiled items that need to be thoroughly cleaned, then the extra time can make all the difference in getting them clean and free of bacteria or dirt. For lighter loads or normal cleaning needs, 15 minutes should suffice. However, if you are dealing with tough stains or trying to get rid of germs and bacteria on children's toys, then at least a 30 minute cycle may be necessary to ensure everything gets properly sanitized.