The NEILMED NASPIRA nasal aspirator is a device designed to help clean the nasal passages of babies and young children. To use, first make sure the aspirator is clean and sterile. Then, gently place the tip of the aspirator in the baby's or child's nostril and gently suction to remove mucus. It is important to follow the manufacturer's instructions and be careful not to suction too hard to avoid damaging your baby's delicate nasal membranes. If you have any questions or need more information, I would recommend consulting the product's instruction manual or contacting the manufacturer.