The answer to 'why is my hardwood floor pet stains' is that pet accidents can leave unsightly stains and odors on hardwood floors. Common causes include dogs or cats urinating, vomiting, or tracking in mud or dirt. Symptoms include discoloration, lingering smells, and damage to the wood surface.
The best solution depends on the severity of the stains and how quickly they were addressed. For fresh spills, blot the area immediately with paper towels or a clean cloth, then use a pet-safe cleaner or vinegar solution to clean the spot. For older or set-in stains, you may need to sand and refinish the affected area. If the stains and odors persist, it's best to call in a professional hardwood floor cleaning service to properly deep clean and restore the floor.