The filters for the Eye-Vac Professional are designed to last the lifetime of your Eye-Vac. As users, we understand that sometimes filters become accidentally damaged and offer replacemenets for your convenience. The HEPA filters ensure the dust and debris do not reach vital components of the machine, as well as return clean air to the environment. To clean, simply use a soft brush to clean away excess particles, then wash gently with water and mild soap. Let sit 24 hours to dry completely and reinsert into the unit. Do not soak in water.