These filters are so easy to re[lace. Just pop out the old...and You're done. They also seem to catch plenty of stuff from what they look like when I replace them.
This is a very useful room purifier. I is just enough white noise to assist with sleep in addition to providing cleaner air in my bedroom. The night light included is also just the right color and brightness to allow for sleep and safety when getting up for a couple of minutes during the night. This is the most practical purifier I have ever owned. And it is easy to take with you on trips for consistent sleep.
I love this air purifier. I keep in on all day every day and am able to turn it down so you can't hear it at all while I'm working. It makes the air in my house feel crisper to breathe. Highly recommend!