Product review (4 stars): Dundas Jafine  Indoor Dryer Vent could do better with zip ties instead of what comes in the box
This works well for indoor dryer vents.  I use two sm. sponges in the bottom, fill 1/4 way with water and add essential oil to brighten the air in my apt. I never see any lint though after use, and I think that it's because my compact dryer catches it all.  Two things to note and why I gave it 4 stars. First, the large hose diameter does not fit on my compact dryer's OVAL plastic vent tubes, so you may need dryer vent tape to get a good seal and it is quite awkward to attach. Then, I used large zip ties instead of the plastic ties that come with this as they SLIP OFF. Other than that, I'm happy.