These permanent filters are made from high-quality surgical grade stainless steel. Dishwasher safe, environmentally friendly, and these permanent filters are a great alternative to paper filters. They last a very long time with lots of use. If you don't have dishwasher, just wash well with hot soapy water, or you can even place them in boiling water for a few minutes to make sure they are clean.
We use these not only for making a single cup of coffee... but to strain our milk from the cows and goats. We place the cone filter into a canning funnel and strain the milk through it into our gallon glass jars. We've yet to find dirt, hair or any other contaminate in our milk!
Link to our Canning Funnel!