It was very simple to use. I had a ten pound previously frozen young turkey. I cleaned it and stuck it in a large aluminum pan. I shook the jar of marinade up real good. Put the needle end on the injector which was very simple, it just popped on. I then sucked the juice into the needle and injected the juice into a turkey leg, filled it up again, did the other leg. I put half of a shot into each wing. I then just went crazy with it and started shooting the juice all over inside the turkey until I had just a little bit of juice left in the jar. I poured the little bit left over top of the turkey and rubbed margarine all over the turkey inside and out. The margarine was probably not necessary but something I have always done when baking a bird. Also, I don't think you are supposed to use the entire jar on one turkey but OMGosh! This turkey was the juiciest, tastiest turkey I have ever had in my life! Below is a picture of what was left of the turkey after it was attacked!
The only complaint I have about LOUISIANA Cajun Butter Injectable Marinade With Injector is I LOVE Thanksgiving leftovers! We didn't have enough turkey leftover to even make a sandwich with!