Well, you can get both reusable and single-use air purifying filters in all categories. Both of these can perform quite well, but the ultimate choice depends on the pollutants you’re dealing with. Sometimes, the pollutants can be quite hard to get rid of; in other cases, they may be too toxic to be anywhere near you. In these cases, a single-use filter works best. Air purifiers with these filters contain a set of extra filters or have subscription models. Reusable filters are an excellent choice, too, and work with most pollutants. However, if you end up with a damaged filter, you may not be able to replace it like one-time use filters.