how well do ozone generators work for odor ?

Im looking into getting an Ozone Generator to keep the odor under control during the flowing stage. Has anyone used one and if so how well do they work ? i'd like to know before i dump a couple hundred into one

LOL, grab you one or two of these little things and you'll be thanking me.
http://cgi.ebay.com/Ionic-Air-Ozone-Purifier-Ionic-Breeze-Ball_W0QQitemZ190203984353QQcmdZViewItemQQptZLH_DefaultDomain_0?_trksid=p3286.m20.l1116

good lookin out bro