I tried them all.......I had to work really hard and still got streaks until I listened to the folks here who said Bar Keep Friend. I didn't have any on hand so I used Bon Ami (guaranteed not to scratch). I used 2 cups hot water and about 2 tablespoons Bon Ami and kind of dissolved the Bon Ami in the water. I wiped it on with a soft towel, scrubbing where needed with additional Bon Ami and wiped it with a rinsed out rag. Dried it with a dry towel and in seconds, literally, no streaks, shiny, clean.........amazing ! I can't believe I wasted all that money on stainless steel cleaning products. I was ready to sell my stainless appliances because they looked so crummy all the time. No wax, no oil, no nothing but clean......yeah! Oh and the bottom freezer section is exactly how filthy the whole thing was.

It is always a good idea to see what the manufacturer suggests for cleaning a product. Here is what Dupont says about Corian: Soapy water, ammonia based cleaners (not window cleaners as they can leave a waxy build up that may dull the surface) or commercially available solid surface cleaners will remove most dirt and residue from all types of finishes. Stubborn residue will require a little stronger cleaner. Follow the recommendations below to properly clean your countertop and sink. Experience has shown that a film builds up on the surface if water is left to dry on the countertop. This film will dull the look of the countertop making the finish appear blotchy and uneven. To prevent build up of the film, it is very important to wipe the countertop completely dry after spills and cleaning. The Dirtex mentioned above should do fine because it has ammonia in it. But rinsing and drying the counter is what's going to make the difference. Here is a link that might be useful: Dupont Corian

Thanks for all these responses--very helpful! I'm looking at Cambria Torquay online now, and it looks like we have a few local Cambria dealers. I'll also check out Caesarstone and the others mentioned. Deeageaux, tks for explaining the difference between Corian and quartz. I'm at the very beginning of my research on this, so having only touched one man-made sample (Corian) I assumed they all felt like plastic. Good to know there are so many options. BTW, my 3 cm Vermont Danby Olymipian White marble was reasonably priced than many other white marbles like Calacatta Gold (my Danby was about $85-90 sq ft installed) and I love it. Just had to give the Danby a plug. But I think the Camb ria or another quartz might be the answer for my parents' cottage, because my mom would hate to have to worry about etching, etc. Thanks again!!

I use 70% isopropyl alcohol (I think it's the strength rec by that doctor). I add the essential Lavender oil (I've seen it at Fairway, Whole Foods, Mrs. Green's, organic/health food stores....) because it has anti-bacterial properties of its own, and I like the scent. I've read (here) that it may alter the surface tension (of the alcohol and water) favorably as well. You can use as little as 10% alcohol to (90%) water and it will disinfect (again, according to the doctor), however, I use a higher am't of alcohol because it smears less, and cleans better. I started out using ~30% alcohol, but use somewhere around 50%-50% now. It's not exact. I top off my spray bottle when it gets low, or when I don't want to wait for it to become low. I eyeball the amounts, and leave a little room at the top of the bottle to tweak amounts as desired (I go by smell; just enough alcohol, just enough lavender... and by spray/wiping without smearing or streaking). I add maybe 20 drops of lavender oil, plus or minus. You can use other essential oils if you prefer. Tea tree oil is another one with natural anti-bac properties. I don't much care for it's scent, and avoided it because it is harmful to cats (don't know about dogs or other pets). I had resisted "making my own cleaner" for the first few years after our kitchen reno, but I do like this much better than the prepared products I'd been using, and I use it on the black enamel burner pans on our Wolf range, SS appliances, as well as on our granite. It's easy enough to mix up, and cheaper, too. I buy the larger bottles of alcohol, and try to pick up a few bottles when they're on sale. The lavender oil bottle, small as it is, lasts a long time.