Thank you for looking! I am selling this because my child has grown up and no longer needs it. Regarding the usage environment, there are no smokers. I do not have any pets either. I purchased it about 5 years ago. There are no noticeable stains, but I will clean it with strong alkaline electrolytic water. You might be worried when you hear "strong alkaline," but it turns into water in the end, so please rest assured. It is also used for food products. The lion's face has faded and is no longer visible. Please check the image (image 3). This is a wooden block set with animal illustrations, perfect for toddlers to play with. - Material: Wood - Design: Animal illustrations - Shape: Various shaped blocks - Storage case: Comes with a dedicated storage tray - Target age: For toddlers Thank you for looking!