How can I effectively remove wood stain from furniture?

To effectively remove wood stain from furniture, you can use a wood stain remover or stripper. Apply the remover according to the manufacturer's instructions, let it sit for the recommended time, then scrape off the old stain with a putty knife or scraper. After removing the stain, sand the surface to smooth out any remaining residue. Make sure to wear protective gear and work in a well-ventilated area when using chemical strippers.