We recommend the Accessories Kit for households with pets: It's adviced to replace the Side Brush every 3 months, replace the Washable Filter every 3 months, replace the Roller Brush every 6 months, replace the Dust Bag every 1 months, and replace the Washable Vacuum Mop Cloths every 2 months. Accessories Included: Replacement Side Brush ×2 Replacement Washable Filter ×2 Replacement Roller Brush ×3 Replacement Dust Bag ×4 Washable Vacuum Mop Cloth ×12 Note: The eufy Accessories Subscription Service requires a monthly, quarterly, semi-annual, or annual subscription fee (depending on the service duration you select). Your subscription fee will be charged on the date of your first purchase and will begin a term. We will deliver accessory items on a monthly, quarterly, semi-annual, or annual basis, depending on the service duration you select. You can cancel, suspend, or restart the subscription service at any time after purchasing the service.