The answer to tough stains on hardwood floor is that there are several common causes, including spills, tracked-in dirt, and pet accidents. Symptoms can include discolored, sticky, or etched areas on the floor. The best solution depends on the type and severity of the stain.
For minor stains, you can often remove them with a hardwood floor cleaner and some elbow grease. However, for tougher stains or damage, it's best to call in a professional hardwood floor cleaning service. They have the right tools and products to safely and effectively restore your floors without causing further damage.