No adhesive came with the kit???
I use the Hammer Time flocking, and I may be a bit biased because I sell it.
But since I do use it I'll be honest. Flocking is all about the labor of love and if you take goose hunting seriously you'll enjoy the results. Kind of like the hardcore duck hunters who like to carve their own decoys. The kit I used had a primer that you put on first...than you paint the adhesive over the primer. Adhesive generally doesn't stick to plastic very well and is why the more you sand/grind it down the better it works.
If you want to help protect the flocking use black socks to put over them while in transport to help keep the "owies" away.