I purchased this about a year ago and used it occasionally when going out. I cannot answer any detailed questions about frequency, etc., beyond what is stated. The rubber on one side of the sixth image is fuzzy. There are no noticeable scratches or stains, but this is based on my personal assessment. Please only purchase if you are satisfied after checking the images. I do not have any pets or smoke, but this item has been stored at home. Please refrain from purchasing if you are sensitive or concerned about minor details. After receiving the item, please check if it matches the product description and provide an evaluation. I will fold it up small for shipping.