Okay, it's a $15 dryer filter. It has holes, few instructions, and depending on the humidity and your dryer and a lot of other factors it's awesome or sucks. I threw $15 at it because I live in a small, unvented studio apartment and everything I own is covered in lint or dust because until now, it all just blew out and around the apartment. The spiders love it, but me? Not so much.I got it yesterday and put it together in a few minutes. Once you figure out how to snap it together and get it aligned right, it's easy and will get easier each time you do it. In the photos, I tried to show the unboxing and what comes in the box. Some people say it's "tiny" or "small" but I am quite pleased with the size. Like Goldilocks, I'd say this is "just right." From reading other people's reviews and seeing the unit I knew the water in the bottom of this would be a mess. I own a shop vac. I know what water + lint looks like. Looking for a non-water option, I went down to my local ACE Hardware store where I spend sinful amounts of money every month and they GAVE me a yard of flexible screening. I cut it into rectangles, then ovals, and used Gorilla Glue to fasten the screening over every hole. It took me about an hour because I'm old and slow and the Gorilla Glue was a PIA to work with. (PIA = PAIN IN THE A**).I got out my new impact driver, took the back off of the dryer to make sure I wasn't drilling into anything important and attached the holder to the side of the dryer. For now, where the dryer is, that was my best option. I did some sort of stupid funky celebration that installation went without a hitch and the holder is rock solid and I didn't drill into any live electrical thing inside the dryer. (Just kidding. I looked and unplugged it before drilling).There's a photo of the back of my dryer - proof I checked first. So, now it's ready to go and I hope it works. I checked with an empty dryer running and the air flow is good, so there shouldn't be a problem. Tiny tiny tiny dust will get through it I'm sure, but if it does, I've decided to just stick one of my Shop-vac filters up in there. I can make a cap shaped filter with that with more glue, or sew it even.PROS:It's cheap.It's well madeIt's lightweightIt's easy to put togetherIt's easy to installYou can improve or adapt it in a variety of ways. It's not so expensive that you'll regret screwing it up.It works to reduce lint and dust - although how much is up to you.The tubing is good and stretches well although it'd put a strain on it to get it four full feet.CONSYou have to adapt or improve it if you really want to eliminate the maximum amount of lint and dust. It works as is right out of the box, but if you want ALL lint and dust gone, you're going to have to get creative and find your inner engineer. I am a redneck. Fixing things with duct tape and stuff is in my DNA.Even outdoor vented dryers blow dust and lint around the dryer, but I enjoy a challenge. If you don't, don't buy this.It's a lint filter. Add water and lint and you have a mess.It takes time to improve or adapt it. I could have been lying in bed eating bon-bon's and painting my toenails instead of gluing screening to this thing. But, it SHOULD last.There are NO screws that come with it. You'd think that for the price two .19 screws could have been included, but no. You have to find your own. The screws are used to hold the support to whatever - wall, dryer, etc. I am a woodworker so I own enough random screws to get me through a zombie apocalypse so I didn't sweat that so much, but if you don't own a drill and random screws, or at least a screwdriver it might be a PIA.Summary, as I figure this will improve my current situation, which is a plus. And, for what I paid for it, plus a bottle of Gorilla Glue, and an hour of my time, it's not bad. It's a completed project. Your own milage may vary.