Do you have any stainless steel appliances? I don't know why they call them stainless because they so easily look smudged and stained. As our kitchen appliances have worn out, I've insisted on replacing them with stainless steel for resale value. Not that I can imagine anybody would want to buy our house in the foreseeable future with the way the real estate market is. And we have no pressing need to move.
Anyhow, we have a dishwasher, range and refrigerator in stainless steel now. The instrutions say not to use any harsh cleaner, nothing but water or mild dishwashing soap. Guess what? Water and mild dishwashing soap don't remove, grease, grime, grit or fingerprints!
So I Googled stainless steel appliance cleaners and found fab reviews for a cleaner that was included as a sample with some lucky purchases. I didn't get any samples. Anyhow, it apparently isn't sold in stores, because I tried Home Depot, Lowes, Wal-Mart and Giant. So I bought another brand, with the same active ingredient, mineral oil, and it works. More or less. Well, it works, but I have to rub and rub and rub really hard.