SCAM
Like "Laundry-Balls" that apparent replace your detergent and those "Energy Efficient" electro-magnetic devices that apparently soften your water - but don't once it falls out of your tap, and don't provide lasting protection for water heaters. Such a device DOES NOT meet the European Union's standards for water treatment.
Ozone cannot clean your laundry. If you've done the laundry, and need to bleach your clothes, PERHAPS it can help. Otherwise, its useless.
Don't waste your money on this, unless you want a stinky washer, filthy and stinky clothes.