Hi Fran,Is there any way to paint the floor in the area that has the pet stains to make it look like an area rug? Then you'd be able to stain aroud the rooms perimeter.
I'm thinking that even if you paint the whole floor the nail heads may not take the paint that well and start flaking.
If you do end up painting the whole floor you can still do this with stenciling. Just remember you'll need to put a few coats of polyurethane over the entire area.
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