Our long time customers form Deerfield brought in their Sebo vacuum with poor pick up. Their Sebo Felix had a clog and a very dirty pre-filter. These folks bought their Sebo Vacuum from Kritz Vacuum & Allergy Relief, which entitles them to FREE annual service and cleanings. We performed the service fro FREE, no charge. We also replaced the Sebo filter and now her Sebo Felix is working great aghain.