I don't understand. I started to say something earlier but thought I'd let the big dogs hunt. You know that all smoke is NOT creosote. Creosote comes from forcing incomplete combustion.
Many folks use aux. smoke generators. But Like D'Bear said I don't get creosote. The MES40, I use an adjustable Oval tube in upon occasion. When I do use the tube the vent is wide open and the door is cracked or on latch. Its too much smoke AND unless you've modified your smoker, you can NOT get enough air flow to sustain a complete burn. The problem is not the aux smoke generator. Its the smoker is not set up for it. You use a little smoke from approx 90 to 150 IT and its really all that is needed. You must have air flow. BTW the MES30 doesn't have a draft/air flow problem.
In the MES40 I just can't get enough air flow to keep anything burning properly. Without more air, so unless the door is open/cracked I use the
Masterbuilt Aux smoke generator (Cold smoke attachment). The added heat helps complete the combustion by increasing the air flow or draft, without creosote, the same as the mailbox mod does, I would assume.
I have extended the exhaust vent an additional three feet, this increases the draft thru the smoker. Equalling changing the 3" vent to a 4" easily. That means extra airflow. But generally I 'll just use the cold smoke attachment with pecan shells or wood chips as its designed. that tiny little tray in the MES40 is totally useless. I use it for 2 charcoal brickets to achieve a smoke ring when I need to prove a point when necessary. LOL You have got to have more air flow to achieve a complete combustion. Well that's how it works at my house anyway.
BTW I just spent sometime today and scraped and cleaned the MES40. I can actually see now thru the window for the first time since the day after it was delivered. LOL! I don't know why you want to see in anyway it ain't gonna move. The very first time in over 2 years its been touched.
The best way to clean the creosote taste, is not to have any.
BTW you know I jinx'd myself by cleaning out that smoker don'tcha?