Can still order it online but for some reason Home Depot doesn’t carry it on their shelves in my area? Lowes doesn’t even have it as an option when I check online. Not sure if this was a seasonal thing or oxalic acid is being phased out for a different wood bleach chemical.
Try Ace hardware under the trade name Wood Bleach
Yep wood bleach is the same. Lowes may have it to or ebay.