I'm one of those forgetful people who often forgets that I started a load of laundry and forgets to take the clothes out of the washer and then has to rewash the same load. I'm frequently leaving the washing machine door open to help it "air out" because my forgetfulness ends up leaving the washer with a musty smell. Anyway, this cleaner has come to the rescue. The smell is gone and replaced with a nice fresh scent. Love it!