Luma Reservkolavluftare

I honestly expected to still smell the box, but the activated carbon actually does the job. The filter clicked in without any fiddling, and the corner of the room stays neutral now.

Swapped this in and the litter corner stopped smelling within a day. The activated carbon actually seems to do something, unlike the flimsy pads I used before. Installation took maybe ten seconds.

Wasn't sure an activated carbon filter would do much, but the litter corner actually smells neutral now instead of that lingering ammonia funk. It clicks in easily and I like that I'm not just tossing plastic — the carbon insert handles the odor itself.