This "Nature's Air Sponge Odor Absorber" really works QUITE well, but only if there's proper ventilation.
I had an entire five-foot tall plant of Twilight that I just harvested. I trimmed inside and it is now drying inside...
With all the windows closed and "Nature's Air Sponge" within and surrounding the area, the entire place reeked like herb. But when I opened the windows and turned on the ceiling-fans, the smell went-- seriously-- just about COMPLETELY AWAY.
This stuff works incredibly well. I know that some people have strong opinions on what works and what doesn't. That's fine. I'm new to this. All I know is that I don't have a lot of money to invest in expensive filtration systems, regardless of how effective they are. This product is five bucks for a half-pound tub (about the size of a little container of margarine or hummus), and I am using two in the tiny room that the herb is now drying in, plus one outside the door to the room, and one more in the middle of the house (just for good measure), and-- so long as the room with the weed has a window open-- when I walk in the house from being away for hours, I only smell a faint scent of freshness, but not herb.
Twenty bucks, and my worries are over!!! I'm drying weed WITHIN the frickin home with NO SMELL PROBLEM. This stuff should be viewed as gold for the ganja-lover!