You’ll need rubbing alcohol and a microfiber cloth. Pour a little less than a capful of the alcohol into the cloth and scrub lightly in a clockwise motion until the stain disappears. Then, rinse the affected area with a bit of water and leave it to dry.
You know that squeegee in your bathroom? Give it a quick wash and rinse, then move it back and forth over your carpet or rug to collect all the fallen strands. Though the hairball you’ll end up with is gross, your floor will be spotless!