The answer to tough stains on kitchen surfaces is to first identify the type of stain and then use the appropriate cleaning method. Common causes of tough kitchen stains include grease, food residue, and mineral deposits from hard water. Symptoms may include discoloration, sticky or crusty buildup, and lingering odors.
For grease stains, try using a degreasing cleaner or a paste made from baking soda and water. Let it sit for 10-15 minutes before scrubbing. For dried-on food stains, soak the area in warm water and dish soap, then use a scrub brush or scouring pad. Mineral deposits can be removed with a vinegar or lemon juice solution. Always test cleaners in an inconspicuous area first.