Replaceable filters offer an additional layer of protection, and they’re easy to make yourself using our template included with purchase.
We have found that “landscape fabric level 2” works best. It's easy to purchase at your local garden store on the roll!
Filters may be made of common household items; HEPA filters (made for vacuum cleaners, air purifiers, and air conditioners), and polypropylene fabric (such as landscape fabric) are ideal options, but vacuum cleaner bags*, coffee filters, or felt can be substituted when necessary. *For your safety, please ensure that your vacuum cleaner bag does not contain fiberglass before using as a filter.