Ultra Ever Dry is just one of many "superhydrophobic nano coatings" that has become conspicuous in the last two or three years. There is also Ceracoat, Nanopool, NeverWet, NanoProtect, Uripel, Aculon, Nano Diamond Shield, and many others. Their low-budget websites all look more or less the same, with videos that begin with "What you are about to see is real!" or "Prepare to be amazed!" These companies all give an impression that they originally sold magnetic healing bracelets and male enhancement pills and they decided to capitalize on an emerging market.
Popular media "journalists" are in the habit of just pasting up marketing content from these websites as though the claims were fact, and calling it "news". Almost none of these products have actually come to market. The German product Nanopool, which continues to be advertised as a silica-based spray-on coating, was sold for a few months all over Europe, and sickened hundreds of consumers. Regulators in every country where it was sold had it pulled from the shelves. German regulators tested the contents from several aerosol bottles acquired at retail stores (for 30 euros each). The bottles contained ethanol, water, and some industrial solvents, but no silica. The company insisted that the absence of their magical nano-ingredient was just a mistake involving a small batch of bottles.
The fact that there is just enough real science to make their claims sound plausible is not evidence that they actually have a product or that it actually does what they say. All good snake oil has just enough real science to be plausible. Among the glut of superhydrophobic coatings companies that are currently advertising, there might be one or two that aren't scams, but I'm not ready to invest any money finding out.