i found another improvement to the doob tube, well not so much an improvement but it definately helps. Go to a store and buy the glade air freshener and it's called fresh linnen, it smells exactly like dryer sheets but it would help to explain the drier sheet smell and spraying it also helps cover up any left over pot smell. ovcourse it has it's drawbacks like the loud noise the can makes which in some cases can be an obvious give away.