Dock stain maintenance

[Descant]

Originally Posted by John Mercier

Is it sticky? Flaking? Or just a powder residue?

That would tell me if it was oil, acrylic deck stain, or possibly even the misuse of acrylic siding stain.

The OP has not responded. That tells me he applied the first coat of stain that he now wants to remove. As noted earlier, probably on fresh PT, and over the water. If that's wrong, he should post details and let us help. There's a lot of expertise here, n on-critical, but we all need to know what the real situation is.