Disposable filters are clinically proven to prevent the transfer of mucus or bacterial germs tothe snot sucker when clearing stuffy noses. Replace filter after every use. (10 Count) NoseFrida creates a seal with the outside of the baby’s nostril for gentle snot sucking. The blue nasal tube, red mouthpiece, and filter cap are top-rack dishwasher safe for easy cleaning. Includes 1 NoseFrida the Snot sucker with 10 Extra Hygiene Filters and All-Natural Saline Nasal Spray (20 ml).