I bought these purple sponges this time because they were prettier than the blue or yellow I usually get. But I have found them to work great! Plus they're cute! And because Scotch-Brite costs a little more than other sponges, when they start to smell, which can happen pretty quickly, I run them through the dishwasher on the top rack when I do my dishes. They have held up perfectly through many washings and I was able to use them for much longer that way. The dishwasher sanitizes them and kills any food bacteria that I'm not able to wash out in the sink, causing that yucky moldy smell. When they come out of the dishwasher they are like new again. And Scotch Brite sponges must be pretty well made to make it through so many washings! Sometimes I just switch them out-use one while the other is in the dishwasher, so I know they are always really clean and ready to use on my dishes or counters.