I purchased 2 bottles of the rescaling solution and used 1 according to the directions and found it underwhelming during the descaling it said twice on the display time to descale and according to the directions to keep on doing a brew until it says to add water which it never did, so I’m considering doing what I did with my old Keurig just use white vinegar to clean after I’ve used my second bottle, not pleased with the results of the Descaling Solution