T.J.
I use Odoban and get the concentrate from Sam's Club by the gallon. I put it in the spray bottle as recommended and spray it everywhere. I like the scent and it's cheap.
I've also used the fabric softener with the Febreeze bottle before using Odoban and it's a great alternative on the cheap.
I'm not a plug-in person since after a week - I can't smell them anymore and they are expensive over time.
I like the dryer sheets in the vents... good one!
I like to see all of the answers you get...