I got the Bio3-Blaster™ Home 14000mg/hour
I've only used it 3 times, but I was very pleased. I rented some of the more popular brands from a janitorial supply company and the the Bio3-Blaster made them look like toys.
there is no timer or anything like that, just an on/off switch, so you have to get your own timer to plug it into.
I put it in a room where a dog had been pooping, I took all of the poop out, but the room still smelt pretty bad, I left it on for 3 hours, and then let the room sit for a day. the room still smelled like ozone for about a week, but I think that is because it was filled with stuff. When I used it in an empty house with a "smoke" smell, I had it run for 6 hours, and then picked it back up 18 hours later, there was no smell whatsoever in the house, smoke or otherwise.