[Jess Carter]

I’m thinking about getting a Clima Pest Guard but my room isn’t pitch black at night. There’s usually a little light from a hallway or streetlamp coming in. Will that stop the UV light from attracting bugs? Just wondering if I need total darkness for it to work well.

[Matt__]

Mine pulls in bugs fine with a bit of ambient light, so I don’t think pitch black is a requirement. I’ve used it in hotel rooms where light leaks under the curtains and it still caught stuff.

[Julia Writes]

Street light glare matters more than hallway light.

[Mike Jensen]

I don’t think pitch black is necessary at all. Mine sits near a window with light coming through and it still catches stuff. The UV is just meant to stand out against whatever else is around, not be the only thing in the room. I’d say go ahead and use it.

[Harper J]

A little light in the room shouldn’t be a dealbreaker. I’ve noticed the bugs still go for the trap even when there’s some glow coming from elsewhere, and honestly the UV seems to stand out enough on its own. The main thing that can mess with it is having a competing light source right next to the trap, like a lamp on the same table. If the hallway light is off to the side, that’s a different story. I’ve had nights where the room wasn’t dark at all and it still did its job. So no, you don’t need to tape up the windows or anything. Just keep it away from other bright lights and let it run.

[Sara Williams]

I’m still deciding on one myself, but the darkness thing is what keeps tripping me up too. My sister runs hers in a room with a nightlight and it still catches mosquitoes, so total pitch black doesn’t sound mandatory. The bug draw just seems weaker when there’s a lot of other light competing.

[Kevin Rogers]

I’ve had mine going for a few weeks now and my place is never fully dark either. The bulb in my kitchen hood stays on overnight and the trap still fills up, so I really don’t think you need blackout conditions for it to pull bugs in.

[Alex_28]

I had mine in a room with a TV on most nights and it still caught plenty. The UV doesn’t need total darkness to pull bugs in, it just competes with other light sources. If you already have ambient light, it’ll still work, just maybe not as strongly.

[Alexa Connor]

I think a little ambient light is fine. Mine only really pulls in a ton when the room is mostly dark, but it still catches some with light coming in. Total darkness probably helps, but it’s not like it stops working otherwise.

[Ben Harlow]

A bit of ambient light from a hallway or streetlamp isn’t going to kill the UV pull. The trap only cares about being the brightest thing nearby, not the only thing glowing. Total darkness helps but it’s not a requirement.

[Dana Lee]

I’ve used mine in a room that never gets fully dark, since there’s a window facing the street and some light sneaks in all night. It still catches mosquitoes, just not as many as when I bring it camping where it’s actually black out. So darkness helps, but it’s not like the thing quits working. If your room has a decent amount of light, maybe try running it closer to wherever the bugs seem to hang out, since that seems to matter more in my experience. Mine’s on a nightstand and it does fine even with the lamp glow from outside. I’d say just use it and see what you get before worrying about blackout curtains or anything like that.

[Jen M87]

I don’t have mine on unless I’m actually in the room, mostly because I don’t like the little glow while I’m sleeping. It still does its thing when I run it in the evening with the lamp on nearby.

[Daniele Rossi]

Mine didn’t catch much at all until I started turning off the lamp near it. I get that everyone here says a bit of light is fine, and maybe it is for some bugs, but my experience was different. I had it in the living room with a small reading light on and it was basically ignored. Once I moved it to a darker corner and killed that lamp, it started pulling in moths and mosquitoes the same night. So for me the darkness mattered more than I expected. Not saying you need pitch black, but if it’s sitting next to another light source, I’d at least try moving it somewhere dimmer. That made a bigger difference than anything else I tried.

[no_sleep]

Mine pulled in bugs fine in a room with a nightlight going. Total pitch black isn’t a requirement for these things to work. If yours is doing nothing, the light probably isn’t the reason.

[Emma Word]

Mine actually did better when I moved it away from the window light. Total darkness didn’t seem to matter as much as not having a brighter light nearby competing with it.

[Leo Grey]

A bit of light is fine, but I don’t buy that it never matters. Mine sat in a room with a bright porch light outside and caught almost nothing until I started drawing the blinds. Not saying it needs pitch black, but acting like brightness is irrelevant doesn’t match what I saw.

[Mike Hall]

I’ll be the odd one out here, because I don’t think ambient light is as harmless as people make it sound. I had mine on a desk in a room with a small reading lamp in the corner, and for the first week or two it barely caught anything. We’re talking maybe two or three gnats total. I figured the trap was just weak, but then I started flipping that lamp off whenever I left the room, and it made a pretty obvious difference. More moths and mosquitoes ended up in it over the next few nights, and I could hear the grid popping more often.

My take is that the UV still attracts bugs, but it has to compete with whatever else is glowing nearby. If there’s a lamp or a bright window in the same part of the room, some of them just head there instead. It doesn’t mean you need a sealed cave or blackout curtains. I still have some light coming under the door from the hallway, and the trap works fine. But I’d say the darker the area right around the unit, the better your odds. So if you can turn off a lamp or move the trap to the shadier side of the room, I’d do that. It’s not an all or nothing thing, but I definitely wouldn’t say light makes zero difference either.

[Nina]

I’ve used mine with a lamp on in the corner and it still caught plenty, so I don’t think you need a cave. Total darkness seems like overkill. It’ll still pull bugs in with some ambient light around.

[LiamW]

It depends what you need it for. I’ve run mine on a covered porch where it never gets truly dark and it still fills up, but it pulled noticeably less on nights with a bright moon. A bit of hallway light won’t kill it, though.

[Kevin C]

I run mine in a room with a bit of light coming under the door and it still catches mosquitoes. What made a bigger difference for me was plugging it in away from where I sit, so it’s not competing with my own body heat and CO2.

[Sophie Nguyen]

I got mine mostly for camping and my tent is never fully dark either, the moon alone is enough to see your hand in front of your face. First trip I set it on the little table by the door and it pulled in a decent amount overnight, definitely more than I expected given it wasn’t a blackout situation. What I noticed is it did better once I stopped putting it right next to my lantern. That thing was way brighter than any hallway light and the bugs just hung around the lantern instead. So my take is a little ambient light is fine, but anything that’s actually brighter than the trap is going to win. If your hallway light is just a soft glow I doubt it kills the whole thing, you might just catch a bit less than someone in a dark room. I still run mine on the battery overnight and get a decent chunk of the charge used up, so keep that in mind if you’re moving it around a lot.

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