My 2 cents, for what it is worth, is stay away from the artificial scents, and use only real bird wings and real birds. I have heard from many a good source that those artifical scents can confuse a young dog. I am no expert, just a relativly new amature trainer, but I tried the bottled scent on my dog and it did seem to mess him up for a few days. I started with pheasent wings, and when I put my Lab on real birds, he caught on fast. Good Luck!