Larry Krohn's book : https://www.amazon.ca/Everything-need-about-Collar-Training/dp/1521126550?ref=d6k_applink_bb_dls&dplnkId=852b580e-55db-4329-b93e-39088854ba7b
Larry Krohn YouTube: https://youtube.com/@lklencho?si=t1CXgnBxyDg1Ppfh
Train with us online at https://shieldk9.ca