> almost all of these devices burn propane or similar to generate the CO2, making them dangerous for indoor use.
I'm not saying it's a good idea, but burning propane indoors is allowed for cooking and heating... although there's venting requirements and venting probably includes the CO2, so maybe not useful.
I use outdoor mosquito devices that have UV + a sticky tape with odor (supposedly, I don't smell it and can't confirm). I don't know how effective they are vs other things, but they do capture a lot of flying creatures anyway.
Oh, sure, you can easily build your own propane pilot light to release a bit of CO2 indoors and it'll very likely be perfectly safe. But I don't think you could sell it to other people.
Most of those "mosquito" capture devices that use UV are very effective at killing everything else except for mosquitoes. Including a lot of stuff that probably shouldn't be killed.
I'm not saying it's a good idea, but burning propane indoors is allowed for cooking and heating... although there's venting requirements and venting probably includes the CO2, so maybe not useful.
I use outdoor mosquito devices that have UV + a sticky tape with odor (supposedly, I don't smell it and can't confirm). I don't know how effective they are vs other things, but they do capture a lot of flying creatures anyway.