when the sweeping robot is working, clean and wipe the floor to make the floor as clean as new.ilters maintain Roomba's cleaning performance while reducing infiltration of dust, pollen and other allergens into the air you breathe.For best results, filters should be replaced every 2 - 3 months.For use with Xiaomi Mijia 1C STYTJ01ZHM/Dreame F9 Robot Robot onlyMade of environmental protection material.Colour: white + yellowMaterial: plasticPackage Contents:4 * filter elements1 * White comb1 * Yellow brushOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.