Used to use those Cajun injectors you see at either the grocery or cooking store and the needle would always get jammed up and/or fall off while injecting. Then I found the ones from Butchers BBQ. These things are dirt cheap and work GREAT.
Mark aka Earl
Slower Lower BBQ
(2) 22.5" WSM, (1) 18.5" WSM, (3) 22.5" Weber Kettles, Super Fast Red
Thermapen, Stoker, Airline Cart!