Ok so the kit comes with 3 rinse pods which are necessary. Then there's a bottle of descaler that you would use all at once inside the tank. Then there's also filters that go in the tank for the water. But for me I don't want to be putting anything inside my water tank that doesn't need to be there. I can see using it if your machine is building up scale and not running as it should. The rinse pods for me helped because the coffee gets stuck inside so using that lifts it then I poured regular clean tap into the capsule area to fully get out all of the stuff that had lifted and it just flowed out into the dirty cup. This helped so that way not everything like teas or other non coffee drinks don't taste like coffee.