Sonic Stain Remover uses ultrasound to clean clothes

Stains on your clothes are often depressing as removing them can be quite a chore, with no guarantee of removal during washing. Why not give the $30 Sonic Stain Remover a go? Powered by 4 AA batteries/an AC adapter, it uses the ultrasound cleaning effect and a wee bit of water to remove whatever stains that reside on the clothing, very much the same way an ultrasound washing machine would work. Tradition dictates that there is nothing better than bucket loads of water and a good dose of detergent to do the dirty job. Has anyone tested this Sonic Stain Remover successfully?