Because Formica is made from pressed paper, letting a stain cleaner soak in can yield positive results in the stain removal department. Which cleaner you use is up to you and your comfort level with various chemical ingredients. Just pour some of the liquid directly onto the stain and walk away. Let it sit for about an hour or more, and you'll likely find that much of the stain has soaked up into the cleanser. A quick wipe with a warm wet rag will reveal the final result. If you made some headway but there's still some discoloration, repeat the process.