ion/ozone generator combo...expensive but for the price of one oz your home can be scent-free w/o perfumy smells or other attempts to cover it. some will say ozone is a plant killer but it's not...at least not in the amounts you'll need to 'eat' the smell. the unit has an adjustable ozone knob anyway so you can go from none to a little to a lot. ion generator is on whenever the unit is on.

"fleer" is the name of the one i use and should be easy to search out or google it. it's worked great for me for almost 5 years now and very easy to maintain. quiet too...just the fan noise and it's a small fan. the smaller version will cover a small house. it covers my dbl-wide and it's almost 1600 sq ft.