Whitestrips Supreme and Whitestrips Professional have literally stopped me doing tray bleaching in my office. Plain and simple, they're easy to use, get great, CONSISTANTresults and are very reasonably priced.
I sell the Whitestrips for 1/4 of what I charged for tray bleaching and am selling on average over the last 18 months about 1 case (4 kits) a week, whereas I was selling 1 maybe 2 cases a month with traybleaching. Plus, many (between 1/3 and 1/2) post whitestrip patients will seek out additonal (generally) cosmetic treatment after bleaching, so I'm then keeping my schedule even more full with the fun, cosmetic cases 😀