Dryer Balls

Has anyone else tried these?  We bought something from our local closeout store that were actually dog toys but if you compared them to the "Dryer Balls" looked, felt and appeared to be the same thing.  Now we did try them and both my husband and I felt that they did not make the clothes feel  softer, and it didn't stop that wonderful static cling.  I think it did help the larger loads dry a little faster.  I would say don't waste your money even if it is the cheaper dog toy version.