[This review was collected as part of a promotion.] The hardest thing for me to make smell good are towels. If you don’t wash them right away they stay with a dingy smell. So I started using these Arm & Hammer 3-in1 power packs. I like to pre-soak first depending on how dingy they smell. But these do really help get the dingy odor out of them. I have bought them but only to use on my towels or sometimes I also use them on my whites. [...]