Sounds like a product for raw wood, not for previously finished sealed wood. And that Howard Feed stuff is liquified with mineral oil, a wood contaminant. Once that is in the wood good luck getting anything to adhere.
That is what I thought, yet Ostermayer stated it could be used for 'finished sealed wood'. Apparently, that is not true with the test I conducted. I'm using the Howard's on "sealed finished wood (French Walnut), so the oil is staying on the surface as protection. I cannot see Howard's or any other oil as a detriment sitting on a finished wood surface.