The big boys respond to infomercials!
These things are so profitable that they've moved out of the infomercial and QVC zone. They're sold in regular 2-minute commercials on cable channels, and they're in stores -- Wal-Mart, Bed Bath & Beyond, and who knows where else. That's enough for the big boys -- I just saw a TV commercial for a new Fantastik cleaner with "orange action". It appears SC Johnson (the old "Johnson & Johnson" company) is responding to Orange Glo International by adding orange oil to new versions of Fantastik and Pledge (aerosol or spray), plus an orange-scented Pledge Grab-It dry mop refill. There is no idea so original it can't be co-opted.