Odor Control

I searched odor control and didn't find any useful posts so my question is what can I do for odor control. I've seen people use carbon filters and even some kind of odor control liquid but what works the best. I would preferably just like something cheap that I don't have to make but I also want something that will be able to cancel the smell of 6 plants in my closet. Any suggestions?

ona gel works real well. they have electric misters as well. they are a couple of diy carbon filters on this site. check em out. good luck stinky(lol)!!!!!

has anyone else used the ona gel? it seems pretty simple and fairly inexpensive.