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3.6
7 Reviews
5
43% (3)
4
14% (1)
3
14% (1)
2
14% (1)
1
14% (1)
14% Recommend this product (1 of 7 responses)
By DonRich90
Stewartstown, PA
It Works for me
October 20, 2016
I've been using this product for a number of years and found it works as advertised. I always clean the glass first before applying the clay to make sure there is no dust or dirt on the surface that might cause problems.
By Jerry
Works well, but...
December 17, 2012
I've used this product for years. It's one of the only products that will remove wiper marks and hard water spots from glass. However, the canister runs out of propellant after one or two uses and the remaining product won't dispense. So it wastes 40-50% of the product. I've tried different methods of storage and cleaning the nozzle with no effect. I've probably used at least 10 cans over the years and all have that problem.
By Dave
one time
October 20, 2012
One star because it only worked one time and it gets the star because when applied with a hand polishing pad (I would not use any abrasive sponge or pad on glass) it worked very well, the can is still full but no foam. the end is clean and has been rinsed. Still nothing $15.99 is alot for a single use .
By DJBAILEY
Speed Sponge will mar your glass!!
June 21, 2012
The Speed Sponge marred the hell out of 7 of my 8 windows on my wife's minivan. I didn't notice that was scratching the glass until I had completed all the side and rear windows. I'm glad that I stopped before ruining the windshield. Won't scratch glass my ASS! The Speed Clay works well with a Mr. Eraser type sponge. That is the last time I trust any company that tries to tell me that a scotch-brite type scour pad won't scratch glass. Got burned by another company who's white scotch-brite pad scratched up a few of my truck windows. I thought that the Diamondite Windshield repellent was junk too. I think that I am done with Diamondite products.
By Anthony
Cuts through waterspots like nothing else!
November 11, 2011
I had a particularly difficult water-spot challenge to deal with last summer. Vinegar wasn't working, clay wasn't working, and even polishing it with a machine and paint compound didn't touch it. I had forgotten about this until I was in the cabinet looking for anything stronger to use and I saw it. A little of this on the applicator and I was BLOWN AWAY!! It cut through the water-spots like they weren't even there! I'm not saying it will do that on everything, but I had hit these with everything I had and nothing worked. This stuff is absolutely OUTSTANDING!!!
By Maggie T.
Really Works!
April 22, 2011
This spray clay is typical of all of the Diamondite products. They really work, and this product really does the job it is advertised to do.
By Matt
removes stubborn stains
March 26, 2006
this clay is simple to use, with the sponge supplied. will remove embedded crud and waterspots. use it on mirrors as well as glass.

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