Oshow-san, I don't remember exactly when I bought these, but it was probably a few years ago. I purchased them from an online shop. I've used both items. The cat item doesn't have any noticeable stains, but the bag has some pilling. I was able to remove a few pills by hand, so if you're concerned, please try it yourself. I'm not sure how long I used them since it was a while ago, but I think I used them frequently for about 1-2 months. They've mostly been stored in the closet. Neither item has been washed. Please be aware of any folding wrinkles from storage. Also, please understand that I am a private seller, so there may be oversights in my inspection. I will fold the bag up small for shipping. Please feel free to comment if you have any questions.