I love strong laundry scents that last. These have been marketed as lasting quite a long time and being quite strong. I do like the scents but feel that for $7 it is a little pricey. It does not last much longer than my liquid softener and dryer sheets that I usually use. The one thing I do like though, is not having to remember to catch the washer at the rinse cycle (I always miss it and have to do a second rinse). It is nice to be able to put it in at the beginning of the cycle. I gave it a four because it is slightly pricier than my liquid softener and I basically have just switched these out with each other. I do not notice it lasting any longer but it does smell good.