are Clean Power Laundry Disks, which, according to the manufacturer's
claims, can wash more than five hundred loads of laundry -- and
maybe even thousands and thousands -- without detergent. Instead,
they somehow use magnetism. Do they work? Probably not, and they're
expensive, so we're not going to test them ourselves. If you'd like
to know more about them, here's
a pretty good article about the disks and the truly amazing
properties they are unlikely to possess.