They’re wedged against the turtle shell.

Next you’ll tell us you’ve been to the moon. Get out of here John Glenn.

Yeah? Well fuck those survey takers. You want to blackmail me with my reputation? G-o f-u-c-k o-f-f.

Presumably the FTC will have something to say about blatant anticompetitive actions such at these. Then again, that’s why corporations buy themselves representatives, senators and judges.

Edit: such not suck

I know this is the DIY sub, but I would get a few estimates to have the floors redone wholesale. Trying to piecemeal it will almost certainly look worse than leaving it alone. You can rent a floor sander and DIY, but they’re tricky to run with no experience so you’re likely to leave the floor wavy. It’s also fairly expensive. Pros will be in and out in three days. If you do decide to DIY, the finish is applied with a lambswool applicator. https://blog.cityfloorsupply.com/how-to-use-a-lambswool-applicator-to-apply-floor-finish/

If the stains are more than superficial, the options are going to be staining the floors darker yet or removal and replacement of the affected boards. Both of those will require refinishing and the latter is for sure a job for someone with experience. I agree with vodulas, that looks like water or pet damage that has already had an attempt at fixing it. Good luck, those are really pretty floors otherwise.

There’s still some around, but not nearly as many as there were. The one local to me closed and the nearest remaining one is like 20 miles away.