I was sceptical about this product at first because I’ve tried so many other brands of washing machine cleaners in the past to try to get rid of the musty smell but it never seemed to work well. The smell would usually be masked for a few days but after washing a load, it would return in full force. Being desperate, I gave BacBuster Washer Cleaner a go and never looked back ever since! It still smells fresh after months. When it starts smelling a bit funky, I just pop a tablet in and it does the job! So happy to have finally found a solution.