I was looking for an oven cleaner does not smell so strong and yet thoroughly cleanses. Because of the good reviews I decided to K2R and am absolutely convinced after the first cleaning. I have the oven incl. The side walls sprayed and leave the whole 6 hours. The cleaner smells only slightly (almost imperceptibly) and also does not sting the eyes. To wash I wear disposable gloves. Duch einfachse "Drüber wipe" the oven was very clean. Today I have cleaned a baking sheet with the cleaner. Again - a great result. When baking sheet I let the foam act only 2 hours. Here I had afterwards a little nachputzen (rub). But even so, I'm satisfied with the result.