Polyurethane, outlines of a can, on floor

Q: My contractor installed laminated flooring; however, when he was applying polyurethane to the rail, he kept putting the can down and didn’t realize that the bottom of the can was leaving marks on the laminated flooring. Now I have marks of the shiny polyurethane, outline of the can, on my floor.

I don’t know what to get it off with, can you help?

A: Just an UNTESTED idea. Maybe a heat gun to soften the polyurethane, then wipe it down with a cloth and mineral spirits. Keep the cloth and mineral spirits away from the heat gun!