What? They are very useful, especially in family homes. Not only do they save you having to clean the dishes manually but they also save water while doing it.
When I'm alone I don't use it though, because I don't get as many things dirty, but if there are >2 people they are good.
When I'm alone I don't use it though, because I don't get as many things dirty, but if there are >2 people they are good.