Yes they do. I don't often go to that section of the store but they did the last time I was. Ollie's has a surprising selection of carpet and rug options.
They do have pieces of carpeting but I'm not sure about the squares you can always call them and ask
They have all kinds of carpet. Squares, areas, rolls, just a matter of pattern/color.
Have different close out squares. Might have them
Thanks! Your answer is awaiting moderation.