I purchased the 3pk of Tide Washing Machine Cleaner to get the musty smell out of my front loader. I followed the directions exactly, and all it did was leave a clumpy mess in my detergent drawer. So I ran the washer AGAIN and put the powder inside the drum (even though it says to put it in the detergent dispenser, which I did the first time). And it still didn't make much difference. So needless to say, I spent about $5.00 on the product itself, and then another $2-$3 to run the washer twice! What junk. I think I'll stick to just running a quick 20 minute cycle with the just soap and water to clean my machine.. Not very impressed at all!