We have noticed that are coffee has tasted rather nasty here lately and not fresh and nice tasting like the previous months have . We knew it was time to clean it . After some homemade solutions we found online it still wasn't performing like it should be . Thank God for this kit . It got out alot of gunk and coffee grounds that where stuck in the machine and using the kit was so easy and wasn't very hard . Our coffee taste 100 % better and we noticed our coffee machine is performing better than it has in awhile.  Easy to stick the little pod in it set the cup size walk away and come back a few minutes later and its done .