4 ms·We've got a neti-pot-like thing that comes with a built-in filter. I don't worry about it past that.by girzel 8y agoWe've got a neti-pot-like thing that comes with a built-in filter. I don't worry about it past that.JackFr 8y agoGoing by this article, it seems like you should.astrange 8y agoA filter is not good enough to remove microbes.