The items have been washed, dried, and disinfected, but some residual odor may remain. Please note that there may be imperfections due to amateur cutting, so please refrain from purchasing if you are seeking perfection. 24 pieces are needed to complete a chair, but I will include one extra piece as a bonus. No pets or smokers. I sometimes receive requests to combine orders for this product, but due to shipping via postal mail, I cannot ship multiple items in one package. I accept orders starting from 100 pieces, so please comment if you need that many. For orders under 100 pieces, please purchase them individually. I have stock that is not currently listed, so please comment if you need a specific quantity.