The answer to 'why is my hardwood floor pet stains' is that pet accidents and urine can cause unsightly stains and odors on hardwood floors. Pets may urinate on the floor due to medical issues, behavioral problems, or lack of proper training. Over time, the urine can soak into the wood and create discoloration and a lingering smell.
To address pet stains on hardwood, you'll need to act quickly. Blot up any fresh urine with a clean, absorbent cloth or paper towels. Then use a hardwood floor cleaner specifically formulated to remove pet odors and stains. If the stain has set in, you may need to sand and refinish the affected area to fully remove it. In severe cases, you may need to replace damaged boards.