I suspect that this is a question you should ask Batch directly. First time I recall hearing of the spray, and I do read pretty much every post. Batch is great at answering PMs. Go to the envelope icon at the top right of the page, open it, and put Batch into the "To" line.
Maybe there will be more discussion of this here, but if not, I'd sure appreciate it if you let us know what Batch says.