I have very long and hard about whether I should buy this device or maybe not. Before buying I have read customer reviews and there were also negative voices. Finally, I thought - it does not cost you 200, so I'm not very much mistaken. After the goods have been delivered and I unpacked them, I first read the manual. That was also the only thing that bothered me, because there is no guide or this guide yes tantamount. The device works well and would even argue - as compared to other devices that have eg 4 or 17 needles - work this ionizer like a cannon. Finally, the device has inside and about 25 or 30 needles (exactly I do not know, because they lie in a row and are covered by the small fan. You can close the device already ne certain type of air remember (so similar to chlorine), with the time it disappears, however. I myself have bought a timer at a hardware store, so you can turn the unit on for ever 10-20 minutes 4-5 times a day. 24 hours I would not, the device also run, as well as ozone is formed. Although the device should satisfy the conditions (for ozone emission), but better safe than sorry. I've tried the device in the cabinet and has to realize that in fact what it has done. The air there is become fresher clothes almost like outdoors aired in the small space I have in turn impregnated my shoes -. also because the device has made his service with the negative reviews I can already imagine that the ionizer was non-stop and turned in. a small space has been established. For these cases, I would still know about smaller devices and look at the ionizer at the numbers. There's a difference whether a device 3 000 000 anions produced (Newgen Medicals) or eg 500 000. anions ... The device I can therefore recommend. Whether for a wardrobe, for a room or shoes, the "stink" after exercise - always a reason to buy it.