I also hear ona odor block works ok, I have some coming in ups tomorrow so we'll see how it works. im using a deodorizer right now that i got from hidhut.com for like $7.99 and its been working very good my plants been flowering for about a month and it smells great in my closet, nothing like weed so im happy. the ona odor block is suppose to actually attach to the odor molecules and do something similar to a carbon scrubber i believe? not 100% sure on that though