Actually there's a line of thought that pre rinsing your dishes can in fact lead to more etching. By eliminating a lot of the soil prior to loading you might not be leaving enough gunk for all those chemicals to work away on and expire leaving them full strength to etch away at your glasses. Hope that makes sense.

Pete's right.....toomuch rinsing equals too much detergent and etched glasses.
Also all glass is not created equal. Some formulae for glass are more prone to etching than others.....
Also a dishwasher that doesn't rinse properly before going into the heated dry cycle will cause glass to etch.
What you can do? Don't rinse....use less detergent and turn off the power dry.
Linda C

I have found Cascade to ruin many of my dishes. Etches the glass and strips the color off the outside of my pans. Once I stopped using Cascade and switched to the cheap store brand (Kroger/Fred Meyers) I've not had etched glasses. I still have color loss on the pans, so when these totally die I'm only going to replace with stainless.

I read on another board the suggestion to use just baking soda. I've been trying that with good results. I like to use vintage Pyrex, but get the color loss on the outsides of the baking dishes. With the baking soda, I can't tell any difference in cleaning. Even plastics are coming out with no grease residue. We have very soft water and I dry on the heated dry cycle.

Gloria

Have you tried Amway's dishwashing detergent? I used to use Cascade, but once I installed a water softener, I found my glasses were etching. I was told it was the interaction of the detergent with the PH of the water, to use something designed for soft water. The only manufacturer of a soft water dishwashing detergent that I found was Amway. I've been using it for years, and if it hasn't stopped the etching, then it has seriously retarded it.

Etching is caused by soft water 99% of the time. If you have a water softener, don't connect it to the dishwasher. If you have naturally soft
water, try using less detergent.

I never rinse my dishes and mine are also etching. I'm just one of those people that think if I have a dishwasher, then it can wash my dishes. I don't see a need to halfway wash them before the dishwasher does it. However, I do have a water softener and use cascade. Maybe that is the answer. I think I will switch detergents next time and see if that doesn't make a difference.

Having tried without success everything on this site and others, it occurred to me to try an automotive rubbing compound. It works! Not 100% of every stain, but 90% is good enough for me. Repetitive application and abrasion is needed to reduce the etching/staining to an acceptable amount.

Do you use the automotive rubbing compound to polish away the etching on the glasses?

I've had a soft water system...whole house. I have etching. Don't remember having it in years past. But I think it may also be the cheapo detergent. I used to use the kind that came with the soft water system. I don't remember etching. Not sure which did it, the cheap stuff or the water. I'm guessing maybe both? Can't disconnect from dishwasher. I guessing etching is permanent??? Didn't think about baking soda (as I saw in a post earlier. ) Helpful posts.

If the etching is due to calcium deposits, use Lime-a-Way liquid to clean the glasses.

If your water contains Silicone, it will never come off. You can find out from your water department whether the water contains Silicone and how much. Los Alamos, New Mexico has this problem.

I don't have soft water, don't pre-rinse the dishes but DO use Cascade. I thought my glasses were etched after years of washing in the dishwasher. But after posting about it here, I found out they were not etched after all. I soaked the whole set in white vinegar for several days (Stacked them up vertically inside a tall pitcher). They were clean! So it was mineral deposits after all. If you have hard water, it's worth a try, in case your cloudy glasses are not really etched.

My dishwasher broke recently. (Sears is coming Thursday to fix it). I've been hand-washing using any good name-brand liquid detergent. My glasses have never looked so shiny!

Fill the rinse dispenser of dishwasher with "white vinegar" and your problem will be solved.

I don't see any etching on my cheap glasses. IKEA and dollar store glasses are fine, it is only the good expensive asses that are etched..

By the way I rinse my stuff before I wash it to protect my septic system. I have a fine mesh strainer in the sink , I put the stuff out for the birds. ThIs is stopping A LOT of stuff from going into my septic field.

The reason glasses etch is the alkalinity of the water they are washed in. Dishwashing detergent is alkaline as is some water. The stuff in the dishwasher detergent that makes it alkaline, is what also cleans the dishes. Food residue on dishes neutralizes some of the alkaline stuff. the amount recommended by the detergent people is a crap shoot because they don't know how well you rinse nor if you have hard water of soft water.
The better you rinse your dishes, the less detergent you should use. The softer the water you have, the less detergent you should use. Vinegar in the rinse dispenser will reduce the chance of etching, but also reduce the cleaning power of your detergent.
Etching is not the same as lime build up. Etching is actually damage to the glass and nothing will remove it.
There is no magic formula to perfectly sparkling glassware ( but for hand washing and drying!)...you have to experiment with your detergent, method of washing and water.
I worked in the testing department of a "major appliance maker" for several years.