Have left me with the review times some time. Now we have the little one already more than 2 years and do not want to miss him. Whoever believes no work with the sucker to have but wrong. We are a 5 Personenaushalt and the sucker runs every morning at 7:00 clock. It has proved to us that the weekly maintenance is a must, that is the weekend, depending on weather conditions or television, it is cleaned about 30min. A great help is a seam ripper (for the whole wrapped hair) and a large can of compressed air. Cleaning should be done out there, otherwise you have all the dust back into the apartment. After one year, I have the sucker completely disassembled and cleaned, which I have now done 2x and did not hurt him. Times should be a little spilled (eg cola and Co) you should make sure that everything is cleaned up, otherwise it is a huge mess. In the meantime, we have replaced the Haupt.- and Eckbürste 2x and 1x rubber brush. About 3 weeks ago we noticed a clocking noise on loading. At the loading station are two movable contacts, this should be checked every now and then, with us on the one had jammed, the battery has been further charged, but a large heat, the contact about 2-3mm evolved on charging contact the sucker in the equipment has been suppressed. After the contact function perfectly again the sound was gone. Conclusion: If he times go by, we will shortly order a successor.