I really like using these instead of disposable filters. And they are organic cotton and all natural. I was worried that they'd degrade the taste and strength of the coffee, but they don't. They're fine--no difference noticed. For cleaning I just dump, rinse, and then let it air dry. Not sure if they could go through the washer. They're holding up well... The packaging said that they last about a year, but it seems that they're going to last me longer than that.