It is not recommended to use duct tape to stick the instant noodle seasoning packets to the bag. This is because the tape may release chemicals and the stickiness may be affected by the ingredients, leading to adverse effects. Instead, it is recommended to keep the seasoning packets inside the bag to ensure cleanliness and hygiene. You can place the seasoning packet on one side of the bag or at the top of the bag, and then close the bag with a clip or other suitable means to avoid loss of the seasoning packet during transportation or storage. Remember to always keep your food safe and sanitary during preparation and consumption.