America_Mrs. 5 I was using some tiny sheep laundry sponges before, but they degraded quickly and were super expensive. These sponges are huge and seem more durable. If you use less fabric softener they work much better at collecting pet hair. I'm very impressed with their performance thus far. To be fair, the only thing that would completely eliminate the hairy clothing issue would be importing an American washing machine and clothes dryer. My Japanese machine just isn't as good at removing or filtering garbage while rinsing and drying clothes.