I've tried 3 types of sealants
Stan's=Reasonable price and performance. Seals pretty well. Dries up fast in hot weather. Lasts only about 2 months in 100 degree weather. Does not seem to be as chunky as it was a few years ago, even though they deny that the formula has changed. Seals cactus punctures fairly well.
CaffeLatex=Considerably more expensive than Stan's. Seeps through sidewalls more than Stan's during initial seal up. Seals cactus thorns ok if they stay in and don't pull out. Does not seal in and out punctures well at all. I had a tire that went from 25psi to 21psi during a ride. I found a large spine in it.I had 3 scoops in that tire, and at home when I pull it out all 3 scoops sprayed out and did not seal!! I now call CaffeLatex by the name of "CrappeExlax":lol: It also dries out in hot weather.
Homebrew=(mold builder/auto slime/antifreeze/water)Seals punctures exceptionally well. The tire that CaffeLatex would not seal, I washed out with a hose, and remounted with "Homebrew". It was blowing air out until I turned the hole to the bottom, and it went "thiipp" and instantly sealed up, and has held air perfectly since. As for cost, it is less than Stan's, and way less than CrappeExlax. And it is not like you can't find the ingredients easily. One stop at Michaels, and a stop at Wally World, or an auto parts store. I have not had a chance to test its hot weather life. So far it is the best sealant, at the lowest price. We have a winner.:thumbsup: