Posted by a reviewer on Amazon

But the sensor is not the most sensitive one out there.

Posted by a reviewer on Amazon

I was a bit skeptical of this at first, even despite the positive reviews i was reading, but the moment i used it, i knew they weren't lying.

Posted by a reviewer on Amazon

This has helped my car smell new, fresh, and clean despite cigarette smoke, *other* smoke, as well as dirty clothes smells and dirty feet smells.

Posted by a reviewer on Amazon

When i plugged mine in, there was no sound - just a little blue light that came on.

Posted by a reviewer on Amazon

I have noticed a slight difference in the severity of my allergies, but i am no scientist.

Posted by a reviewer on Amazon

The unit is silent and the only indication that it is on is the blue light coming out from the flashlight looking part.

Posted by a reviewer on Amazon

It does not have any bending parts, so it may be harder to fit into the spaces that cars have their power adapter in.

Posted by a reviewer on Amazon

I love it it works great but out of the two i bought, one of them turn out to be extremely noisy.