Legit. You only have to look at the scummy residue on a shower curtain to realize that personal cleaning products don't self clean themselves away down the drain. Don't forget the mold and mildew that will grow on the residue as well. Hard water makes it even worse. Why don't you put the shower inside, right inside the door to the basement? It'll be much more useful that way. Especially if you create the full rest of the bath to go with it.

You can use Windex Original formula (the one with 5% ammonia in it) to clean off a patch of floor. I like to start with flooring behind a door that you always leave open. 1. Spray/soak Windex over a 1ft x 1ft area and let sit for 30-60 seconds 2. Wipe up with clean cotton cloth (cloth should come away a little orange or yellow/brown) 3. Mist the same spot and wipe up IMMEDIATELY using NEW clean cotton cloth. 4. Continue misting same spot until you clean cotton cloth/rag comes back colourless (perhaps a bit blue or 'damp' looking) Ammonia is a degreaser and a very mild chemical stripper that, when used as above, will not damage hardwood flooring finishes such as polyurethane/urethane or polyacrylic. Do NOT use on oiled floors. Question: have you used (or anyone used) the Bona POLISH? Bona has created two maintenance products. The CLEANER states it right on the bottle. It will also read: Does not leave a residue. The POLISH is a bit more confusing. The polish will state "returns floors to original state". That's a hint and a half that it is the polish.

And just to add to the pain, anything CHEMICAL is going to cause ISSUES with refinishing. Remember: chemical contamination (aka..WD40, Goof Off, Goo Gone, Orange oil, etc) will prevent your floor from taking a finish. Hmmmmm. Not good. You really should be using a mechanical removal system (aka...low-grit sand paper...palm sander, chisel, etc). If you PHYSICALLY remove the glue (and some of the wood it is sitting on) you will NOT have an issue with refinishing. Besides, an OIL finish requires EXCEPTIONAL LEVELS of sanding. The very BEST sanding professional you can find = just good enough for oiled floors. How about a photo so we can see what you've got going on for wood and adhesive.

I had a big bottle of Roundup (1 Year) fall over in my garage behind some equipment, and I didn't realize it for about 3 weeks. What is left was a bunch of residue and it looks like it ate into the concrete. I've tried everything so far that I have to clean it up, I scraped what I could, tried dawn and baking soda, then industrial degreaser, stiff brush on an electric drill, and finally a wire brush on the electric drill. Nothing seems to clean it up, it's like it's become part of the concrete. Any ideas or methods I can use to get rid of this?