This has a smaller footprint than the Zevo. They WORK. You might need more than one based on room size.
I hope it works. I bought one because I can’t have a doggie door because of my cats. So the door is open and shut constantly in the summer. Citronella candles are good but not good enough 
I bought two of these on Woot! A few weeks ago! They work well. They’ve caught gnats, house flies, gnats, and moths. I’m not really a fan of blue lights but I am less of a fan of bugs. I am about to buy some more!
Check the price of refill traps before you buy.
How long does a sticky card last, or should I say how often do they need to be changed?
It’ll depend on how many pests you have, of course but I found this on Amazon:
What is the UV Wavelength this uses? I’m worried about radiation exposure.
Recent studies have found the “catch” ratio for light “lures” for bugs have dropped from 35% to much closer to 5% - and analysis suggests, after so long, lights HAVE been so effective that genetically many fewer bugs are now attracted. So glue cards, fly-paper, bug zappers, etc are “on their way out”…