Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: How often do you change the motor filter and the AirClean filter?
Document: Miel vacuum cleaners and their replacement bags are not cheap, but they are worth the money. I always buy these original Miele bags because I don't trust the imitation ones. These have many layers of filtration, are very strong, and hold a lot of dust, dirt, and pet hair (I have cat who sheds year-round! ), so you don't have to change bags very often.
These are good. I mean that it's the right item for the right vacuum cleaner.I have dust allergy - so this bag + hepa filter - no problems with vacuuming and changing the bags.
If I had to change bags every two weeks, forget it, but since they last so long, I can justify the high price of these.
These cost more but are worth it. I'm all about not buying OEM to save a few bucks, but in this case, you wont be sorry. the first time you change an overfilled bag you'll understand...
The order for replacement AirClean FiltertBags for our Miele Canister Vacuum Cleaner came on the day promised. No problem at all.
If Miele in and of itself wasn't enough, these amazing bags are perfect gilding for the lily. Allowing maximum airflow for peak suction and designed to reduce all airborne dust, dust mites and allergins these bags are highly recommended. Easy to change, very durable and well priced, nothing but the best for my White Pearl.
I am using these bags with my Miele Capricorn S5981 and like them a lot. They are extremely well made and in fact so substantial-looking that the first time I looked at them I thought surely this was a permanent bag and the actual dust collection bag would be inside it separately. Not so - these are in fact the bags you change out. Very impressed with that.
I tried the Filtrette bags and came back to Miele. They're just better.I know they're expensive, I know there are alternatives (including a broom and dustpan if you really want to go back to basics), but if you spend the money for the best vacuum, why not use the best bags?No dust escapes, even when you change the bags. And they last a long time, even when jammed with pet hair like mine.
I have owned a Miele vacuum for several years and it has never lost it's original strong suction. Replacing the bags and filter is easier and far less messy than emptying and washing a plastic collection cup. I purchased the vacuum locally and was offered a lifetime discount on bags, but 10% off doesn't offset the cost of driving across town, dealing with the 2+ years of road construction in that area and fighting for a parking space.
I love My Meile, it is quiet as I'm deaf in one ear I can hear music, someone talking to me, and the lightness as I'm not well. I also like the filter it is the best. I cannot think of anyrhing that could be added to make it a better machine! It cleans fast and feels so light I just love everything about it. I even came in 2 business days and that was during the 4th of July week!Thank you so much!Bubbe
Answer: Have not had to change it yet.