Negative Ion Plug In, Portable Negative Ion Generator for Home,Automatic Release of Anions,Easy to Use, More Suitable for Bedrooms, office, Toilets, Garages,Small Room（4 Pack)

These devices have helped my home to have a much better air quality. I highly recommend. There is no noise with it. However it does light up like a night light. I’m very glad I purchased this!

When going around plugging in these units, I have one that will not work. There is no light when I push the button...I would like to try these as I have pets, but three of them are working...Update: I was contacted by the company and was sent more of the units. These new units also are not working!!

It has a green light that flashes on and off. I really can't tell a difference but continue to use them. More as a night light

i keep 3 in my area. i have 2 in my room, one behind my nightstand, and one by my bookshelf. and 1 in my bathroom. i have 2 cats that prefer my room over anywhere else in the house, plus their litter box is in my bathroom. i recently adopted my second cat, so i needed something besides plug in air fresheners the help with smell. keep in mind the smell is only with the litter box after they use it. im a clean freak and very organized. i also had the problem of having stuffy noses and stuff with the cats always being in my room. i wanted something to help with the air quality but i didn’t have the space or aesthetic for a big air purifier. so i found these with relatively good reviews. i use this with air fresheners because i like the way they smell. and honestly, i think it does pretty good! my mom has only commented on my room when i feed them wet food, other than that, no complaints from me or her. so that’s a win in my book! i recommend giving this a shot, and if you don’t like them you could always return it ! it’s a good deal for four of them !

I brought two to go into living room, really can't tell if they are doing anything. Just remember to push button on bottom to get the green light to turn on so you at least think they are working, and any power outages you have to rest them. No noise at all, has not cut down the dust, can't tell anything about air quality improvement. Don't know if I need more but not impressed

I bought thinking it wasn’t going to work……….but was I surprised when it worked! My son brought his girlfriend’s (she went out of town visiting friends) cat in his room………the cat seems to poop ALL day long……..my bedroom/office has an adjoining wall with his bedroom. So, when that cat pooped, that would be all I would smell. Now, as long as I leave my bedroom/office door closed, my room is FREE of the almost constant poop smell. I think I’ll buy a couple more of these!!

I am truly amazed by how good this product works. I have two cats that, let's say, leave behind less than desirable scents behind after they do their thing. I tried everything from different litters to deodorizers to plug ins, but since my oldest no longer buries her "stuff" (comfortable? Isn't she?), the scent would permeate around the house. I plugged these bad boys in near the litter boxes and what a difference! Scents are neutralized and the most you smell is right when she drops her stuff. I also have one plugged in the kitchen wall and my cooking smells do not sit around the house. You know when you love the smell of pork when you first cook it, but don't love the smell of pork while you're trying to sleep?. It's like having a guest overstay their welcome... But in both cases they work well. I also love that you get four so you can plug multiple around the house. Even though i think these are intended for small places, i have an open concept kitchen and rooms are of fair size plus 30 ft ceiling in the entryway. It works and I'm happy.

YOU PLUG IT IN AND THE GREEN LIGHT COMES ON! IS IT ACTUALLY DOING ANYTHING? I DON'T KNOW! I AM AN ELECTRICAL ENGINEER AND I KNOW THAT NEGATIVE IONS HAVE A CERTAIN SMELL. THIS DOES NOT GIVE OFF THAT SMELL SO I DOUBT IT IS DOING ANYTHING! I MAY RETURN THE 4 PACK!

Still havent found an adapter to plug it in and I have always considered myself good with electrical items?!