I've used the Dunk-Kit for about two years now. It is not a magic cleaner; I still have to use the brushes. However, it is so much easier to use than Hoppe's, etc., that I clean my guns far more often, and far more completely, than I did before. I remove the grips and, quite literally, dunk the gun in the liquid and let it sit overnight. Several months ago I poured the liquid into another container and cleaned out the sediment that had built up on the bottom of the bucket. Then I poured the liquid back in the original bucket and still use it. My liquid level is getting low now, and I will probably have to buy another bucket later this year.
One thing about Dunk-Kit that is different from kerosene or gasoline (other than the fire hazard) is that it leaves a lubricant film on all pieces even after wiping it off or blowing it off. Kerosene or gasoline will leave the metal dry. I use a small compressor to blow the excess out of the trigger groups and small parts.
The link mentioned is to a 2001 article. When I ordered my Dunk-Kit about two years ago, I think they still offered both versions; one for polymer guns and one for non-polymer guns. I ordered the Universal mix. They no longer offer two versions; they only sell the Universal mixture. It works with both polymer and non-polymer guns.
I use mine for my .22 rimfires too. A word to the wise; brush off the excess powder and crud before dunking your .22 rimfire. It helps keep the sediment level down.
I called Cylinder and Slide before I made my purchase; I was a bit skeptical. The guy I spoke with answered all my questions without a moment's hesitation.
I ordered the .75 gallon bucket. Next time I think I will order the 1.75 gallon bucket. I can fit more guns in it that way.
The product comes with a warning sticker on it saying to not soak parts more than two hours and to not leave it in the original container for more than a year. The guy I spoke to told me they put these restrictions on because someone had left a gun in the liquid for some long period of time (it was a year or more I think) and the gun was somehow damaged. He also said some guy left the product in the bucket in the garage for years and it finally leaked out. I regularly leave steel guns in the product overnight or all day with no concerns and no damage. I know I have cleaned polymer pistols in it, but don't recall how long I left them in the product.
The product is not harmful to the skin like gasoline would be, but I always use the nitrile gloves when I use the product. Another good thing; the product does not stink.
I hope this helps. I am not associated with Cylinder and Slide other than as a satisfied consumer.
