I have found the Ultra Viola Practice Mute very effective. I can practise and not worry about driving my neighbours up the wall or find then foaming at the mouth bearing torches and farming implements during those long and sometimes tedious sessions when something can only be just right. Well, obviously "only just right" is the only thing for which anyone can strive and the Ultra Viola Practice Mute is perfect for this. I have tried many other mutes, but, for my ancient instrument at least, this is the best.