I thought the liquid had a clean smell that was not overpowering. I chose to pout it into the drum instead of the dispenser because I wasn't sure how effective it would be. I was not a fan of the time commitment it took to use this product. Waiting 1-12 hours for it to activate and then another 6 hours can be inconvenient for active families. I didnt notice any significant changes but will trust the product did what is was supposed to. The directions did not specify how often this product should be used. I will try it again in a few weeks.