I have been using this solution since I bought my coffee machine more than a year ago. We use the machine many times a day either for coffee or just hot water. I couldn't say what it would be without the solution but I can say that my machine still works like a new one. I'm pretty sure the solution is helping even though I find it expensive. When I'm done cleaning the machine I use that same solution mix with water around the house. Works great for the shower head for example.