Are window blind and curtain cords tied with clothespins or

specially designed cord clips?

It is not recommended to tie window blind and curtain cords with clothespins, as they may not provide a secure hold and can easily come loose. It is better to use specially designed cord clips or cleats that are designed to securely hold the cords in place and prevent them from becoming a potential safety hazard. These cord clips are often included with window blinds or curtains or can be purchased separately at hardware or home improvement stores.