Without trying to be pushy, here - please do a search on "mikepetro" 's input on USCs. He has experience in this field! Definitely worth your time & effort to go this route! I am so happy with this cleaner & so glad that I caught his posts right before buying a sup-par unit that would not have done the job & would not have held up to the abuse I would have given it!. Especially in my case, doing all vg, this works great! Don't mean to sound pushy, but , just know how crappy I would have felt if , after paying a similar $ amount for something of less quality or less $'s for less quality, the unit wouldn't have fit my needs ( or worse yet broken after a short time.) This is so workable & convenient! If you don't mind resetting every 8 minutes or you don't vape that much liquid in a month this may not mean much to you. I vape 10 ml / day & it has to be all vg & organic flavoring ( or I have allergic reactions ) so... This USC is phenomenal! Just thought I should let you know my experience with this.