INCLUDES: Each pack comes with 20 Hygiene Filters. SAFE: It's totally safe (for parents AND baby), so you can say "sayonara" to snotty noses. BETTER TOGETHER: For seamless snot sucking use these filters with Frida Baby's Nasal Aspirator NoseFrida The Snotsucker (not included). FILTERS: Replace after each use to maintain suction effectiveness of the NoseFrida. DISPOSABLE: After each snotsucking session, discard the used Hygiene Filter and replace it with a new one.